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1 definition by Rainbowsandponies

 
1.
When you cant get a boner at other girls at a party because your penis feels guilty about your girlfriend.
"Dude, that girl in the skirt is so hot, I'd bang her"

"I wish I could, but I have a guilty boner"

"Sorry bro"
by Rainbowsandponies February 12, 2014