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.

Rock Tits by Charles Campbell September 3, 2005

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.

rock tits by Jaymz T July 10, 2007

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.

Rock Tits by themaninblack12345 December 2, 2011