In one of my first (in person) introductions to the great dry Britsh wit, I was in Sim 1, Day 1 on the BA-146 at Hatfield. Instructor in the back, using his pointer to go over all the instruments, switches, indicators (retired BA fellow as I recall).
He pointed at a red flag in the standby attitude indicator, and said "It's time to get out the flight attendants emergency checklist - it seems our vibrator is inoperative".