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!?
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi
May I have an order of regular degular buttermilk pancakes? Without all the added jazz? Hold the blueberry smiley face, strawberry glaze, chocolate chips and whipped cream.