When your talking too a friend and say Nippleatick. in which you grab one of your man boobs and smack someone on the head. preferably taking your boob out!
The act of greeting someone by gently squeezing (and hence exciting, and possibly putting a smile on) their nipple. Usually followed by a wink. Not recommended for greeting someone of the opposite gender, but results do vary.
Every time I see Billy, he nippleshakes me but I never get the time to do it back because I would lose all my senses for a couple of seconds.
James tried to nippleshake that girl he had a crush on. He thought it would have a similar effect to when I do it to him. He was wrong. Now he has a bruise on his right cheek to tell the story.
NIPPLETACULOCITY-pronounced: nip-pul-tak-u-lah-si-tee (n.) the state of one's (a female) nipple protruding through the fabric of an upper body garment and looking spectacular. NIPPLETACULOUS is the accepted adjective form; add -ly for the adverb form.
Pamela Anderson's nippletaculocity in a bikini is unrivaled.
One who likes to tickle nipples. This can also be used to call someone a clown, jokster, goof, crazy, etc.. Some people you can just tell by their appearance that they are nippleticklers. Others it takes a little more research to discover this.