Top Definition
(n)When ones penis is at the midway point of being fully erect, yet it does not fully hard and protruding upward, thus creating the illusion you have a very large flacid penis.
"As I showed them my cock, they thought it was huge because of the fact I had a mini boner, yet they thought that was the actual flacidity of my penis."
by kasjdhaksjdh January 09, 2008
1 more definition
A nickname given to a chinese guy that has a very small penis.
Guy 1: yo, danny has a small penis!
Guy 2: isn't his nickname Mini Boner?

Guy 1: yeah, he can't chop girls with that mini boner...
by Daho October 16, 2010

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.