This is a combination of the words 'bitch' and it's derivative, 'beotch'.
In order to experience the full effect of its usage, the user should deliver it as if he or she is a chicken. Careful timing between its two syllables makes its application broad and effective.
A bitch-like person (typically a woman) that also exhibits a few traits of a classier person. A girl that reminds you of a run-of-the-mill hosebag that also will cook you dinner, clean your clothes, and laugh at your jokes. A lady with a lack of morals mixed in with occasional bouts of class.
bitchbath is a bath taken in a bathroomwithout 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 !