Used as a taunt/warning call prior to the action of sticking ones leg out with the aim of tripping a colleague up. Not necessarily to make him fall completely over but just for him or her to break stride rhythm and look like a "twat" in front of tidy snatches or rugby jocks they are trying to impress. Scream this at the top of your voice before the fatal trip.

A tourist to sub-orbital or orbital space, through commercial space flight programs.