bitchbath is a bath taken in a bathroom without a tub or shower, with a sink and paper towels, targeting the armpits and ctotchal region of a male or female.
Dude #1: Hey, lets stop in at that bar for a drink, it looks crowded, like it's crawlin with women !
Dude #2: Okay but first go back to that gas station so I can take a quick bitchbath, I stink somethin fierce !
Dude #1: Alright, but make it fast !