“What do you get if you cross a snake and a hot dog?”/“A fangfurter.”

A frankfurter riddle has been cited in print since at least 1976:
 
Q: What is Count Dracula’s favorite snack?
A: A fangfurter?
 
A snake version of the riddle was posted on Twitter on December 10, 2009:
 
Q: What do you get if you cross a snake and a hotdog?
A: A fangfurter!
 
     
Google Books
Biggest Riddle Book in the World
By Joseph Rosenbloom  
Illustrations by Joyce Behr
New York, NY: Sterling Publishing Company, Inc.
1976
Pg. 71:
What is Count Dracula’s favorite snack?
A fangfurter (frankfurter).
 
Google Books
Riddles
By Vas Gratian
Sterling Publishers Pvt. Ltd
1996
Pg. 82:
A fangfurter (frankfurter)
 
Google Books
Friends for Never #14
By Nancy Krulik
New York, NY: Penguin Books
2004
Pg. ?:
“You guys know what Dracula’s favorite snack is?
 
Kadeem shook his head.
 
“A fang-furter!” George said.
 
Twitter
Jeffery A. Cahoon‏
@JefferyCahoon
What do you get if you cross a snake and a hotdog ? A fangfurter !sna
9:39 PM - 10 Dec 2009
   
Google Books
Sensible Nonsense.. Frank’s Comic Pack:
Humour Pack Series
By Frank Paul
BookBaby
2014
Pg. ?:
What do you get if you cross a snake and a hotdog ? A fangfurter !sna
   
YouTube
Ok, here is the joke. What do you get if you cross a snake and…
botcaster inc. bot
Published on Jan 22, 2016
What do you get if you cross a snake and a hotdog ? A fangfurter !sna
 
Twitter
Lucky Score‏
@LuckyScoreNet
What do you get if you cross a snake and a
hotdog ?
A fangfurter !sna
#Joke from #SnakeJokes in #Jokes,  #Humor and #Satire
8:44 AM - 20 Aug 2017