“Why did the cannibal leave the restaurant?”/“Because he got cold feet”

To “get cold feet” means to be nervous or anxious about an upcoming event. The expression has been used in several cannibal jokes. “When my mate Barry was invited to a cannibal restaurant he got cold feet; so he sent them back” was posted on Twitter on June 29, 2012.
   
A joke was posted on Reddit—Jokes on December 7, 2016:
   
Q: Why did the cannibal leave the restaurant?
A: Because he got cold feet.
   
“Never go to a wedding in the winter. Someone always gets cold feet” is another “cold feet” joke.
   
   
Wiktionary: get cold feet
Verb
get cold feet
1. (idiomatic, intransitive) to become nervous or anxious and reconsider a decision about an upcoming event.
The groom got cold feet before his wedding.
 
Twitter
an cailín cainteach ☘
‏@Trillian_01
Careful you’re not late to the cannibal feast or you might get the cold shoulder… RT @MrCraigBierko At the last minute I got cold feet.
11:17 AM - 7 Dec 2010
 
Twitter
Steve Varty
‏@4EverSteve
When my mate Barry was invited to a cannibal restaurant he got cold feet; so he sent them back.
9:48 AM - 29 Jun 2012
 
Twitter
Clod #978
‏@IGseanAuthier
In the dinner before his wedding, the cannibal got cold feet.
6:12 PM - 11 May 2015
 
Reddit—Jokes
The cannibal nervously decided to try his first human meal
submitted July 23, 2016 by aidan_stuart
Much to his dismay, he got cold feet
 
Twitter
Michael Crane
‏@cheshamclaret
@piersmorgan @Brucescribbler @_AaronD7 @harlinexal I went to a cannibal restaurant on my own as last time the missus went she got cold feet
9:44 AM - 25 Oct 2016
   
Reddit—Jokes
Why did the cannibal leave the restaurant?
submitted December 7, 2016 by Arik5502
Because he got cold feet.