“Yo mama is so fat, when she went skydiving she caused an eclipse”

A popular “yo mama” insult “fat joke” is:
   
“Yo mama is so fat, when she went skydiving she caused an eclipse.”
 
The joke was posted on the newsgroup rec.humor on August 16, 1998.
 
   
Google Books
Leon Schuster’s Lekker, Thick South African Joke Book
By Leon Schuster
Halfway House, South Africa: Zebra
1998
Pg. 345:
Your momma’s so fat, she went skydiving and caused a total eclipse of the sun.
 
Google Groups: rec.humor
Looking for insults
Brian
8/16/98
(...)
Yo’ momma so fat last time she went skydiving there was an eclipse.
     
Twitter
Amanda‏
@Softnarrygrunge
Yo Mama is so fat, that when she went skydiving there was a sudden eclipse.
10:19 PM - 16 Jul 2010
 
Twitter
~‏
@LaciMfNicole
Yo’ Mama is so fat, when she went skydiving, she made a eclipse.
5:18 AM - 30 Jun 2011
 
Twitter
ola wealth‏
@olamoneyZzzz
Yo’ mama is so fat when she went skydiving,she caused an eclipse
11:39 AM - 20 May 2012
 
YouTube
Jokes - Yo’ Mama is so fat, when she went skydiving, she caused an eclipse.
jokesus
Published on Aug 7, 2015
Joke :
Yo’ Mama is so fat, when she went skydiving, she caused an eclipse.
   
Twitter
Sasitaran Vasu‏
@sasitaran
Your momma is so big that when she went skydiving, we had a irregular solar eclipse #yourmomma
7:25 AM - 16 Jun 2016
 
Twitter
CrackMeUp‏
@crackmeupbot
Yo’ Mama is so fat, when she went skydiving, she caused an eclipse. #crackmeup
6:12 PM - 8 May 2017