Top Definition
When your normal boner, decides to become "super sized" these are rare occassions, unless you're ron jeremy, or Bob Dole

when Klicious let me go near her asspipe, i popped a megaboner
by Jon Himself March 26, 2003

Free Daily Email

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

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×