. . . however some of the best pranks occur when the sleeper isn't woken up.
For example our college hall of residence had a big floor-to-ceiling window in one wall, making it like a shop's display area. A favourite trick was for someone (usually a member of the mountaineering club) to go along a 4th or 5th floor window ledge to gain access to the bedroom of an intoxicated, sleeping student. Then he'd open the room's door from the inside so that accomplices could carefully lift bed & occupant out of the room and into the lift before placing 'sleeping beauty' (often stark naked) on display for all to see in front of that big ground floor window.
Sorry, Pasta, to some of us oldies the cry of 'Wakey, Wakey' means only one thing ;-)
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Maybe for you Chris, for me it means an early wake up call in a barrack room in Army training, because the NCO's would burst in at dark o'clock with shouts of:
Chilldoubt, it only means the Billy Cotton Band Show on the radio to me! The bandleader always started the show by yelling "Wakey Wakeeeeeeeey!" whereupon the band would play their sig tune, Somebody Stole My Gal.
But he got the idea from being in the army.