Top Definition
(Verb)-The process of one's nipple becoming hard.
"Ahhh its so cold in here, im about to start niptulating."
-

"Yeah she was so happy to see me, she started to niptulate right away."
by HUNTER MORGANNNNNNNNNN May 18, 2010

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×