What a girl has when her shirt is stretched so tight across her chest that it causes horizontal ripples in the shirt from boob to boob. More often seen on girls with big boobs.
Dude, check out the girl with that tight shirt and nipple ripple!
"Hey, you remember that blonde chick I used to mess around with a couple months ago."
"Yeah the freaky one right?"
"Mhmm. Man she had onegross Ripple Nipple."
"Yuck!"**Spits Then Sips Beer**