When I was in ground school, oooo, more years ago than I care to think about now, the instructor was talking one day about all the three letter identifiers and such we were going to have to learn. CHT, EGT, TCA, MEA, VOR, DME, ETC. ETC. ETC. Then he wrote on the blackboard:
KYGDHOTP. Everyone wondered what that meant. At the end of the class he said, "It's a safety tip;
KEEP YOUR G** D*** HANDS OFF THE PROP!!
AV8TOR