BugLabNick's definitions
To make a promise to shave someones pubic hair, then back out of that promise at the last possible moment
"I wanted a clean shave to get ready for my bachelor party, but my friend Brian pulled a total shamalamadingdong on me. Now how am i supposed to get my entire grundel silky smooth?
by BugLabNick August 6, 2011
Get the shamalamadingdongmug.