look up any word, like fleek:
 
2.
An erection caused by a very full bladder, often quickly dissapates when the person begins bladder evacuation.

Also see Peerection
"Wow I had the largest peeboner before I went and took a piss just now."
by metalheadsunite December 30, 2005
 
1.
The condition where you have to urinate so bad that you have a stiffy. This usually is found in the morning.
You're not even horny, that's just a pee boner. Now go and make some coffee.
by slonob February 01, 2004