stbwtf
An amalgamation of "shit the bed" and "what the fuck" - when either of the two do not capture the amount of surprise you are feeling.
Jack: dude check out this hot ass porn i found
Billy: wtf dude isnt that your moms room?
Jack: stbwtf
Billy: DUDE WERE U JACKIN IT TO YOUR MOM'S PORN!?
Billy: wtf dude isnt that your moms room?
Jack: stbwtf
Billy: DUDE WERE U JACKIN IT TO YOUR MOM'S PORN!?