“Yo mama’s so poor, your family ate cereal with a fork to save milk”

A popular “yo mama” insult “poor joke” is:
 
“Yo mama’s so poor, your family ate cereal with a fork to save milk.”
 
The joke was posted on the newsgroup rec.humor on May 2, 1993.
 
 
Google Groups: rec.humor
WANTED MAMA JOKES    
Robert NMI Ligon
5/2/93
(...)
22. Your momma’s so poor, your family at cereal with a fork to save milk.
 
Google Groups:  rec.humor
yo mama
Donovan Williams
6/4/94
(...) 
22. Your momma’s so poor, your family at cereal with a fork to save milk.

Google Groups: hk.talk.sex
Yo momma so poor your family ate cereal with a fork to save milk.
Abided
4/27/97
Testing
 
16 February 2002, Washington (DC) Post, “At Darrell’s Barbershop” by Colbert J. King, pg. A25:
Seething at the thought of being shut out of the competition, Jerome said, “Here’s what I would have told them.” And then he got going, wailing in rapid succession: “I was so poor that:
(...)
“Our family ate cereal with a fork to save milk.
   
Google Books
The Yo Momma Vocabulary Builder
By Justin Heimberg, Christopher Schultz and Steve Harwood
New York, NY: Seven Footer Press
2007
Pg. 79:
Yo momma’s so penurious, she eats cereal with a fork to save milk.
   
Google Books
Yo’ Mama Is So…:
892 Insults, Comebacks, Putdowns, and Wisecracks About Yo’ Whole Family
By Hugh Payne
New York, NY: Black Dog and Leventhal, Publishers
2007
Pg. 170:
Yo’ mama’s so poor your family eats cereal with a fork to save milk.
 
Twitter
Piet Santy‏
@ploem
@bertvandamme allright. aand we’re back! “Yo mama so poor your family ate cereal with a fork to save milk.”
7:12 AM - 25 Feb 2009
   
YouTube
Jokes - Yo’ Mama is so poor, she eats cereal with a fork to save milk.
jokesus
Published on Aug 7, 2015
Joke :
Yo’ Mama is so poor, she eats cereal with a fork to save milk.
 
Twitter
Yo Mama Jokes‏
@YoMamaJokesInfo
Yo Mama so poor, your family ate cereal with a fork to save milk http://bit.ly/1QVKpeG  #YoMama #YoMamaJokes
2:30 PM - 17 Oct 2017
 
Twitter
Lucky Score‏
@LuckyScoreNet
Yo mama so poor your
family ate cereal
with a fork to save milk.
#Joke from #YoMommaJokes in #Jokes, #Humor and #Satire
10:04 AM - 22 Nov 2017