Top Definition
When you are so horny you start blowing bubbles.

When it used towards a female it means she's so horny that she thinks her bubblegum is a penis.
"DUDE! that chick makin a hornbubble!!!"

"I wanna blow a hornbubble up her ass!"
by ChampB April 17, 2009
5 Words related to Hornbubble

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