When you're having sex with a lady, when you get finished and you cum on a sponge, mix it with picante sauce and guacamole and rub it all over her.
Guy 1: "Dude, what did you do last night?"
Guy 2: "We tried out the Mexican Sponge Bath!"
Guy 1: "Ew, gross!! How'd it go?"
Guy 2: "Suprisingly well..."
Guy 2: "We tried out the Mexican Sponge Bath!"
Guy 1: "Ew, gross!! How'd it go?"
Guy 2: "Suprisingly well..."
by FakeSandwich December 2, 2012
The blanket used while hooking up in the backseat of a car to soak of the juices. Inevitably it's the Mexican throw blanket found for sale on the side of the road.
It was a good thing I had my Mexican sponge in the backseat because my girlfriend totally squirted all over the place and I didn't want that be soaked up in the upholstery.
by MexicanSponge February 7, 2016