Word used to describe something that is bad, crappy or just generally low-quality. The estute reader will notice that it is just a French-ed up version of "ghetto" used to make something sub-par sound better than it actually is.
Yeah, our apartment may be really ghetteau, but we love it anyway.
A bath consisting of a variety of slats, oils, soaps or any other added ingredients such as fruits, milks, herbs or any other spices for health or beautifying benifits.
She brought home alot of stuff and took it to the bathroom. She must be taking a witch bath.