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!
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.