Lobster Nipple Share definition Flag When a male or female pinches their partners nipples during sex. And it becomes so red it looks like a lobster claw. It looks like you gave them the lobster nipple Lobster Nipple by jackhammer1222 June 27, 2010 0 0 Get merch Get the Lobster Nipple mug. Buy Now — $32.95 See more merch