Top Definition
(n) a grundle pumper is a person who enjoys playing with other people's grundles during sexual relations. (see 'grundle')
"Hey man why doesn't that kid get girls?"

"Because man, he's a total grundle pumper"
by Phil_M August 16, 2011

Free Daily Email

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

Emails are sent from We'll never spam you.