Its when you do a girl on her back. When shes about to squirt, you stand up and squat over her and let her squirt you in the butt.
"She just bideted me in the butt"
by Ed M Rod January 31, 2008
After tagging a girl in the ass you piss on her arsehole to clean it up.
So I'm balls deep in the hookers ass and I gave her quick bidet to clean it up.
by Fuk Yoo December 13, 2003
<hygene> The process of washing one's ass in a public bathroom. May require an accomplice to hold the door closed and better if documented on video.
"grab the door, I gotta go bidet"
by D@nny April 19, 2007