We used to have
10 FOR N=65535 TO 0 STEP -1 20 POKE (N,0) 30 PRINT "COUNTDOWN! ",N 40 FOR X=1 to 1000 50 NEXT 60 NEXTThen we'd kick them all off and see which ones crashed first*.
I think WHS staff used to love those days, and think fondly back to their happy memories of young, but technically aware, kids coming into the shop to "try out" the computers...
I wonder if anyone was violently slain?
(* incidentally, the Apple ][ like mine lasted longer than most, mainly because it was distinctly slower and it was the Speccy that raced to a fatal memory exception quickest of all, if I recall correctly.)