Top Definition
1. Medical phenomenon that occurs when a funny story ends in something sexual, illiciting a laugh and a boner.

2. Medical phenomenon that occurs when you are in a tickle fight with an attractive person.
1: Girl - "So, the bee flew down my blouse and I panicked, so I threw my shirt off, but I forgot I wasn't wearing a bra!"

Boy - "Haha... uh-oh... laughing boner"
by Speakerfish November 20, 2008
5 Words related to Laughing Boner

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