Top Definition
When the scrotum shrinks to the point that it pushes the flacid penis up to appear as if it is a tiny boner, you have what is called, a shrinkage boner. Generally occurs during cold and/or wet circumstances, i.e. getting out of the ocean, pool, outdoor shower, etc.
I just got out of the pool and I totally have a shrinkage boner, want to see?
by Tommy_Z June 08, 2012
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.