When a mustachioed man goes down on a girl. Like dipping a paint brush into a can of paint, he fills the bristles of his mustache with her lady juice. He then uses his pussy-juice soaked mustache to coat her body with her own girl cum, like a nurse cleaning a patient with a wet sponge.
Me: "Last night Sarah was feeling extra dirty so she asked me to give her a mustache spongebath."
Sarah's Mom: "What?"
Me: "Just cleaned her up a bit."
Sarah's mom: "Oh, that's nice."
Me: "You have no idea."
usually an overwieght celler dwelling slob of a person. too damn lazy to even maintain personal hygene. they only attempt to perform any sort of hygenetic action when the carbuncles underneath their inner tube flabby flesh begins oozing with smelly pus. then they make a half hearted attempt with an old bactira filled sponge from beneath the bathroom sink and lukewarm water...
Dude, did ya get aload of that spongebather he's been wearing the same t-shirt since 1999.....
Crack that has been frozen and chemically altered to take a sponge-like form. A common drug used to cope with the death of Stephen Hillenburg, the creator of the popular cartoon, Spongebob Squarepants.