Watch your mouth!
"You are an A. . .!" Oops, watch your mouth! Anything to avoid using a certain swear word beginning with A.... Fortunately, the German language has a loophole. Try Armleuchter.
Literally, it's a candelabra. With its many arms it's more than practical during black-outs. But it serves an alternative function as well: It can also help you save face in front of impressionable young children if you don't want to be caught swearing.
Adults, however, are fully aware of the double meaning, so use this word of the week with care!