leaving a skid mark on a white sofa while having sex in a "backward cowboy" position.
I left a "dirty vasquez" on the sofa while I had sex with Amy.
by El Pepino March 21, 2005
The act of a girl blowing a cum filled pussy fart into the face of her partner
Smith got a dirty vasquez last night and he can't see a thing.
by Rory D May 30, 2007