1. When a girl has breasts so appealing that her vagina is neglected in favor of inter-mammary intercourse.
2. Breasts that a guy finds he can't help but ejaculate between during a titfuck, even if it's supposed to be foreplay.
Thanks to her chastity tits, Leslie didn't lose her virginity until 25 despite being a massive whore.
by shuttlebutt June 29, 2010
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