i'd probably enjoy an occassional joke in the short spiel; however i can't help but wonder: is it "legal"? i mean, does the airline "officially" allow it as a valid security briefing? if some passenger was to raise a stink w/the airline regarding the lack of a proper security briefing, or worse yet sued the airline on the grounds of having followed the (funny/sarcastic) security briefing and thereby incurring some moronic losses...... would that even be entertained by any legal body??