One whom douches their twat. More of a derogitory word towards one whom doesn't realistically douche their twat, but is made fun of because they act like they have a twat to douche.
A twat doucher can be used in the literal sense as well. All females are twat douchers.
Hes acting like such a twat doucher right now. What a bitch.
You smell dirty, douche your twat.