“What happened at the cannibal’s wedding party?”/“They toasted the bride and groom.”

A cannibal riddle is:
 
Q: What happened at the cannibal’s wedding party? 
A: They toasted the bride and groom.

 
The cannibal joke has been cited in print since at least 1990.
 
           
Google Books
Fun Sums:
74 Maths Puzzles

By Don Wagstaff
Longman Cheshire
1990
Pg. 3:
Did you hear a out the cannibal wedding?
They toasted the bride and groom.
 
10 May 1992, Detroit (MI) News, Joe Falls column, pg. 61, col. 2:
John S. Sooth of the South, wonders if you heard about the cannibal’s wedding party: “They toasted the bride and groom.”
 
18 December 1998, New York (NY) Post, “Strictly for Laughs” by Joey Adams, pg. 53:
Did you hear about the cannibal wedding party?” - “They toasted the bride and groom.”
   
Google Books
The Little Giant Book of Giggles
By Charles Keller  
New York, NY: Sterling Publishing Company, Inc.
2003
Pg. 232:
Did you hear about the cannibal wedding party? They toasted the bride and groom.
 
Google Groups: alt.humor.puns
Kids Puns of the Weak 11-02-04
Stan Kegel
11/2/04
(...)
The newlyweds went on a cruise for their honeymoon and found themselves shipwrecked on an island where a tribe of cannibals lived. Nevertheless, the inhabitants were very welcoming. In fact, when they found out the couple had just been married, the cannibals threw a party. They toasted the bride, then barbecued the groom.
 
MyCity 
Smešne i zanimljive slike,vicevi i fore na engleskom
Blackerka
Poslao: 24 Dec 2004 13:16
(...) 
A cannibal joke
What happened at the cannibal’s wedding party?
They toasted the bride and groom!
     
Twitter
Bruin‏
@TheRealBruin
What happened at the cannibal’s wedding party?
—They toasted the bride and groom.
12:07 PM - 6 May 2009
   
Google Books
1001 Kid’s Jokes
By Kay Barnham
London, UK: Arcturus Publishing
2016
Pg. ?:
What happened at the cannibals’ wedding?
They toasted the bride and groom.
 
Twitter
lorraine Jo King‏
@LahLahBean
#Wednesdaywit What happened at the cannibal’s wedding party? 
They toasted the bride and groom
11:55 AM - 30 Aug 2017