That reminds me, I found a long expired fire extinguisher in a car so decided to play a little joke on my mate. I emptied the contents of the powder fire extinguisher into the backbox of his Renault 5 then put a rubber glove over the tailpipe and gaffa taped it on. He got in and started it and i have never seen a rubber glove get so big! It went with a hell of a bang followed by the biggest cloud of smoke ever, he really shat himself and jumped out thinking he had blown it up. Rather amusing
when i was in the 6th form, there was a girl who's dad had restored an early moggie minor for her to drive... at the time people were taping condoms over tailpipes, but the tailpipe on the moggie was really small, so at the pub we all went to, we stuck a party balloon over it, and it failed to start... it wouldn't even crank over the girl was going mad that someone, and she laid the blame (rightly) on me, had sabotaged her car, then she rang her dad to come & sort me out, meanwhile my mate removed the balloon, which she hadn't seen.... so her dad arrived to bollock me & i pointed out that i'd done nothing to her car, which miraculously started....cue one embarassed girl & apologetic dad...