A knock-knock joke involving cash (and cashews) is:
“What are you, some kind of nut?”
The joke has been cited in print since at least 1970.
13 December 1970, Sunday Herald Traveler (Boston, MA), “Joke Box,” pg. ?:
Knock knock. Who’s there? Cash. Cash who? What are you, some kind of nut?
From HELAINE LINDBLOM
Doctor Knock-Knock’s Official Knock-Knock Dictionary
By Joseph Rosenbloom
New York, NY: Sterling Publishing Company
I knew you were some kind of nut.
1,000 Knock Knock Jokes for Kids
By Michael Kilgarriff
New York, NY: Ballantine Books
I didn’t realize you were some kind of nut.
September 2003, Boys’ Life, “Think & Grin,” pg. 61, col. 1:
Zach: Knock, knock.
Mac: Who’s there?
Mac: Cash, who?
Zach: No, thanks. I prefer peanuts. — Zachary Duppstadt, Stoystown, Pa.
Another One: Knock Knock/ Who’s there?/ Cash/ Cash who? / No thanks I’d prefer to have a peanut. from Mrs Siggi
7:34 PM - 10 Feb 2009
The Big Book of Laugh-Out-Loud Jokes for Kids:
A 3-in-1 Collection
By Rob Elliott
Grand Rapids, MI: Revell
No thanks, I’d rather have some peanuts.
No thank you I’m allergic to nuts
6:38 PM - 23 Oct 2015
New York City • Banking/Finance/Insurance • Wednesday, March 23, 2016 • Permalink