Rock Tits

Ridiculously unattractive fake boobs; breast implants looking as though ready to pop if touched.

Chris suffered a fractured penis while attempting to screw Michelle's rock tits.

Mike chipped a touch on Carrie's rock tits during foreplay.

by Charles Campbell August 8, 2005

Rock Tits

When a person (typically a bro) is worked up and needs to calm down. See also Chill yo tits.

Dude, you need to heat your rock tits. I was kidding you bitch.

by themaninblack12345 November 30, 2011

rock tits

When someone's nipples become hard and pointy either because they are cold or because, in a girl, they are aroused.

Bethany's rock tits were a clear indication that it was getting cold out side.

by Jaymz T June 13, 2007

rock tit

Rock tit is what happens to your nipples when they get cold, or in some cases, when one gets horny. Rock tit is characterized by a sudden hardening of the nipples, hence the name.
More "severe" cases of rock tit, where ones nipples are so hard they could shatter bones, is named "Diamond tit".

Joe: Dude, you should have put on a better shirt for today.
Hal: Why's that?
Joe: It's cold out and I can see your rock tit.
Hal: Aww shit!
Joe: Attractive.

by LordFishstcks June 20, 2007