1 definition by SuperDART

Top Definition
Rock Tit's, When a girls nipples are so hard you can see them through her shirt. Often happens in the cold or if a girl has more pokey nipples and doesnt wear a bra. May even happen during erousal of a woman. Many guys get RT's too in cold.
John: "Oh man did you see Madi's RT's?"

Alex: "Yeah those are Bonerific!"
by SuperDART May 09, 2008

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