A sexual term combining the words "Bidet" and "Fellatio." This act begins with a blumpkin. Once the shit is successfully ejected, the blowjob ceases, and the two participants stand up and change positions. The girl crouches behind the man, and performs a rusty trombone. In the process, she cleans the man's shit-filled asshole, acting as a human bidet.
I fucking love bidetios.
I got a bidetio last night, it was completely full service!
Why pay for an enema when you can get bidetio? They're free and pleasurable!