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Originally said by Butthead to Beavis, the phrase is said when you are watching someting really HOT that causes you a strong erection, and then your friend tell you something totally disguasting or stupid, and that causes your erection to disappear immediatly.
.....
Beavis: Yeah... and *poop*.
Butthead: What did you say?!
Beavis: I said "poop!".
Butthead: Beavis... you just sank my boner to the ground.

I was watching an awesome music video showing hot chicks in bikinis shaking their booties. And than this ugly, black, fat rapper appeared and it sank my boner to the ground!
by Urban_Fellow June 28, 2006
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