Thanks, Alex. I was just extrapolating from the verb form "to cut." Knowing it's specifically "butcher" just makes it 10 times funnier!

I, too, never knew, gnu,
That "John Thomas" had that meaning.

[Bob Dylan has a line in one of his songs--I'm blanking on the title, but it's the one about the Red Iron Ore--, where the song's narrator says she "...quit [work] in the spring to marry John Thomas, a miner."

Genie