Top Definition
The animal mascot of hooking up or potential hook ups.

Formed by projecting both index fingers from forehead to form hippo ears, and then bending knees.
Person One: Look at Matt and Alyssa, they just kissed.

Person Two: Hook up hippo!!! *does gesture*
by Señorita Christine November 02, 2008
6 Words related to Hook up hippo

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