To rectify an unsatisfactory session of sexual intercourse by post-coital masturbation.
The guy was oblivious to her clit and made "sweet love" like a numb jackhammer. As a last ditch effort to salvage her evening, she rectabated after he passed out.
To sodomize oneself with either fingers, vibrators, dildos, or random objects.
Rectum + Masturbate = Rectabate
When Chavo went to Cuba, his boyfriend Ignacio rectabated himself raw every lonely night.