Trying to remember a unix gag from the early 90s. You could send a command to someone else's terminal and a little guy would appear on screen and slowly push the whole thing off your monitor. If you knew what was up, you could kill the process, but if not, you'd be locked out. I'd swear this was called "Ferkle", but I can't find anything mention of this anywhere. This was on a Sun SPARCstation, I believe.
Anyone?