I just got up from conversation with a couple of older black men, that I said “well I got to go back to work and start cracking the whip.” And it occurred to me then that it was probably a really insensitive stupid thing to say.
Sadly, it hadn’t occurred to me until it’s already said.
My mother-in-law used to call everyone “zipper-heads” until someone pointed out that it’s a slur against Koreans (and a particularly graphic one at that).