I managed a homework help chatroom for EEs. One of them got a PI and was so happy. Another person suggested that they run that command. Later on the other person claimed they didn't expect it to work.
It took me and another mod way too long to help the other guy fix his PI. Wasn't really happy about it. The new rule I came up with was if you must must make a joke do something harmless like "touch /this" and reference MC Hammer.