Top Definition
For those who like to add crude meaning to an otherwise unoffensive term - "third wheeling"

Just like a pair of wheels, a third testicle will stand out, and should not be around(in most cases)
a) Oi, Pete, whose the third testicle?

b) Bobo hooked up with some chick, so i started third testicling
by Third Testicle August 03, 2009

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.