Top Definition
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
1 more definition
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

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