Presented as a viable alternative option to those women with nipple-vaginas and fertile breast-wombs, but still wishing to engage in recreational nipple sex without risk of mammary conception, the radically popular Chichikan Onahole Masturbation Bra/Bikini (COMB) (nicknamed the “Cum-Bra”, due to its acronym), a novelty hygienic safety multifunctional adjustable formfitting front-clasp insulating antiseptic undergarment, lingerie and/or swimsuit with translucent open-tip nylon or vinyl cups (for easy cleaning) especially designed for and worn by women with reproductive mammaries (but can also be worn by women with any of the other penetrable nipples treatments or congenital conditions), and is specifically designed to be worn while engaging in penetrable nipple sex, in that it has transparent integrated-but-detachable dense insertable internalized nonporous latex nipple-sac pouch-condoms coated in mild-to-moderate adhesive (to prevent from sliding out of the penetrable nipples’ teat canals), which also negates any need for penetrable nipples sanitation, as it externally collects the semen while inserted, and can be easily pulled out of the splayed nipples and emptied (or left inserted and the seminal fluid soaked up with dual nursing breast pads or a simple dish sponge), and as a bonus, has limited self-cleaning capability so it can be used many times, but every now and then requires periodic rotation, recycling, and replacement of the nipple-sac pouch-condoms, and helps prevent ISBXS (Interim Seminal Breast Expansion Syndrome). Before putting on the Cum-Bra again, it is always best to clean out the impermeable nipple-sacs (the parts that is inserted into the teat canals of the penetrable nipples), as they may possibly be filled with residual milk from lactation due to nipple-fucking stimulation of the milk lobules of the breasts. So even when pulling out the nipple-sacs when wearing the COMB, if there is any lactation, the internal parts of the nipple-sacs will collect and partially fill with breastmilk. Visually, the uncovered open-tip nipple areas on the breast-support cups of the COMB will either look like closed slits or will have open-tip colored metal or plastic capped nozzle-rings (called the nipple-iris) which can be opened or closed on command via smart nano-circuitry woven into the cloth to expose and splay the still-internally-sheathed penetrable nipples. In other words, it works in a similar manner as a generic nursing maternity bra, with removable cups. The Cum-Bra can be worn preventatively on a daily basis when frequently traveling in unknown territory with perverse predators to avoid tentacular nipple rape, the resultant egg and larval infestation, milk contamination, and mammary infections from torn clothes, if a careful woman still somehow becomes snagged, trapped and violated. This preventative measure only applies to weaker perverse predators. This cannot, however, prevent any woman from becoming permanently forcibly integrated into the reproductive systems of a bio-cave queen-monster and made into a reluctant breast-hatchery, unless either wearing a metal bra or bikini armor, or even a Metal Chastity Locking Bra. The reason for this is that the monster-queen’s penetrator-tentacles are strong enough to break through the nipple-sac pouch-condoms and/or tear off the undergarments when forcing an integrated conversion. Penetrable nipple type, size and length for the Cum-Bra does not matter; the nipples can either be inverted, regular, or erect stick nipples (which may need to be pressed down, splayed and plugged, or gently pinched shut). (Chichikan is a Japanese word that literally means “nipple fuck” and Onahole means “masturbation hole”, or in other words, an artificial silicon vagina, or in this case, an actual nipple-vagina.) The COMB, or Cum-Bra is a clean, contraceptive sexual undergarment lingerie brassiere or bikini specifically designed for a woman with reproductive mammaries to literally aid in her husband’s nipple-fucking masturbation fantasies made reality (recreational nipple sex) when not wanting to procreate by inseminating her nipple-vaginas and impregnating her breast-wombs. However, if her breast-wombs are already pregnant and the cervical canals have sealed, the pregnant woman can still wear the Cum-Bra (albeit with the nipple-sacs shortened internally) to aid with her husband’s nipple-fucking needs, with the added benefit of hopefully inducing mammary contractions. While with pregnant breast-wombs, the formfitting Cum-Bra also has strong elastic stretchable cups that will expand as the twin fetuses within the breast-wombs develop to larger size even at nine (9) months, then when it is time for the nipple-birthing of the babies, the Cum-Bra must be removed. Please note the Cum-Bra can only be worn by women with viviparous breasts, not oviparous, as the Cum-Bra can interfere with the external egg-laying breasts process (better to wear cupless, nippleless, or nursing bras), unless no fertilization of the oviparous breasts’ eggs have occurred, or if chosen to be worn, must be removed prior to oviposition. The Cum-Bra can also be worn by women with breast-mouths and used as a kind of pacifier (with chosen nipple plug inserted), or for those with penis-nipples or breasticles (not for penis-tentacles, as they are too long and flexible), for engaging in nipple-sex with either a woman with reproductive mammaries (without risk of breast insemination), or just for recreational nipple sex with women who have simple penetrable nipples, and of course with breast-mouth oral sex partners. However, the Cum-Bra cannot be easily worn and used by women with polymorphic nipples, as the manifold natures of such a condition renders the Cum-Bra completely unusable and utterly impractical, due to the fact that polymorphic nipples both extend and retract concurrently. When not being used for nipple sex, but being worn in public, extra attachable removable small cloth flap-cups fastened by simple clasps or hooks (or magnetic plastic/metal nipple shield covers) provided, can be used to cover the sheathed nipple gap-holes (with inserted nipple plug) of the Cum-Bra, so, aside from the erect plugged stick nipples (which can be naturally disguised with pseudo-nipples, see above nipple plugs section) poking through the flap-cups, the Cum-Bra could pass as just another regular nursing bra. (Without the penetrable nipples being plugged, the flap-cups will have circular hollow concave depressions where there should be erect nipples.) (Some women have modified nursing bras or other open-tip or open-bust cupless/nippleless bras or bikinis to become cheaper improvised versions of the Cum-Bra, which is generally illegal, not to mention considerably less effective.) It is not advisable to wear the COMB if a woman has the medical condition of billowing membranous breastmilk bags (milk-sacs) ballooning up and out from her prolifically lactating penetrable nipples, as the expanding effects of the condition could damage the COMB’s latex nipple-sacs. The Cum-Bra can be worn by women who have unaltered breasts and natural non-penetrable erect or stick nipples to be used in either one or two ways: For sexual stimulation of a man’s penis by way of nipple-rubbing and breast-pressing paizuri, or for a strange way of lactation stimulation, expression, and collection of breastmilk collecting in the unused removable drooping latex nipple-sacs, though the Cum-Bra is exclusively fashioned for and marketed to women with reproductive mammaries (both viviparous and oviparous) and other sterile penetrable nipples types. On the note of arousal, erogenous lactation stimulation of penetrable nipples is what the Cum-Bra is also uniquely suited and designed for, but only the insertion of active electronic dildo vibrators at least for the long-term breastmilk productivity, though on occasion can be facilitated via protective nipple-sex by a male or futanari female partner’s penis, or even the penises of two partners. On another marketing note for women porn stars with penetrable nipples (be they fertile or (temporarily) sterile breast-wombs), the Cum-Bra can be worn in porn shops with their covered, protected breasts protruding through a circular hole in the wall (called the “glory hole”), albeit with their penetrable nipples unplugged for experimental penetrable nipple sex by passing male (or futanari female) customers, who can opt to insert their penises (without fear of impregnation), or can probe their fingers into the penetrable nipples for feeling of the penetrable nipple’s latex-protected spongy tissues. Woman porn stars standing in a porn shop modeling the Cum-Bra also helps to promote this erotic lingerie, the Cum-Bra, with penetrable nipples optionally plugged (which is recommended when not showcasing the Cum-Bra’s seminal collection ability via glory hole), or can be left unplugged.