When you suddenly realise that you're doing something the guy standing next to you should be doing but isn't because he's distracted you sufficiently, causing you to forget that you should'nt be doing what you're doing where you're doing it........you've been Sheaff'd!

A person with an outwardly dominant, masculine, or aggressive personality, but who also enthusiastically takes on the submissive or "bottom" role in the bedroom.