In Italian, a chooch is slang for “jackass.” In Portugese, it’s slang for “vagina.” When I started a band named Southpaw in 1995, I requested “funny liner notes” from my friends David Crouse and Spencer Norcross, In them, they refered to me as “Choo-Choo.”

So, Chooch is a derivative of Choo-Choo, jackass and vagina.

I have the liner notes somewhere. Perhaps, if there’s interest, I’ll scan them in and post them...