“What’s a vampire’s favorite ice cream?”/“Veinilla.”

A popular children’s Halloween pun is:
 
Q: What’s a vampire’s favorite ice cream?
A: Veinilla.
 
The “veinilla” (vein + vanilla) joke has been cited in print since at least January 1997, when a “Cryptoquip” puzzle answer mentioned “Count Dracula” instead of “vampire.”
 
“What’s a vampire’s favorite fruit?”/“A blood orange” and “What’s a vampire’s favorite fruit?”/“A necktarine” are similar vampire riddles.
 
 
3 January 1997, Sun Herald (Englewood, FL), “Cryptoquip,” Our Town, pg. 8, col. 5:
Yesterday’s Cryptoquip: DO YOU ASSUME COUNT DRACULA’S VERY FAVORITE ICE CREAM FLAVOR IS VEINILLA?
 
23 June 1998, Los Angeles (CA) Times, “Laugh Lines; Pint-Sized Punch Lines,” pg. 3:
What is a vampire’s favorite flavor of ice cream? Veinilla. (Alexandra Greenberg, 7, San Diego, Ecole Francaise de San Diego)
       
Google Groups: alt.music.garth-brooks
Dumb halloween jokes, we all need to get in to the SPIRIT of things
Hapekat
10/23/99
(...)
Q.Whats is a vampire’s favret ice cream?
A.Veinilla.
 
Google Groups: soc.senior.issues
Y2K Remembered
Nixon, D.
11/2/02
You know Dracula’s favorite Ice Cream slavor???  !!!
—————————————————————  Vein - ella
 
Twitter
BatteryWholesale.com
‏@GtownBattery
What is a vampire’s favorite ice cream?    .....  Veinilla
10:57 AM - 23 Oct 2009
 
Twitter
Mary
‏@missemmamm
What is a vampire’s favorite ice cream flavor? Veinilla. -For more free jokes text ChaCha at 242242.
3:49 PM - 7 Mar 2010
 
Google Books
The Mammoth Book of Really Silly Jokes:
Humour for the whole family
By Geoff Tibballs
London: Constable & Robinson Ltd
2011
Which flavour ice cream is Dracula’s favourite?
Vein-illa.
   
Google Books
Insults Anywhere Kids Presents Joke Book Of The Living Dead
By Franklin Yantz
Insults Anywhere (Smashwords Edition)
2011
Pg. ?:
What flavour ice cream is Dracula’s favourite ?
Veinilla !