Imagine right, if your running away from say the preppies or bullys and yuor mates with the jocks, your running to the football field and you make sure that whoevers chasing you is still after yuo, you turn a corner and run up some staris and find your mates their mucking around, you turn around your mates like this behind you. -------------
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( the little thing is you) then the Preppies or whoevers after you come bloting up the stairs after you and sees about 15 jocks standing there waving baseball bats round (think Warriors) you hear your chaser mutter "holy shit!" and run, you gve chase and batter them, showing whos boss;)