Rusty Hydraulic 

When someone shits in between a girls tits, and rubbs it around. The tity-fucks her.

Boy: "Its bee a while since i have gave someone a rusty hydraulic"
Girl: "Whats that?"
Boy: "Here lemmie show you, just take your shirt off...."

Rusty Hydraulic by a-gap right now October 21, 2011