“How do Mexican keep warm?”/“They use chicken for heaters.”

“Fajita” sounds a bit like “for heater.” A fajita riddle is:
 
Q: How do Mexicans keep warm?
A: They use chicken for heaters.
 
The joke was posted on Twitter on May 24, 2010.
 
   
Wikipedia: Fajita
A fajita (/fəˈhiːtə/; Spanish: [faˈxita]) is a term found in Tex-Mex cuisine, commonly referring to any grilled meat usually served as a taco on a flour or corn tortilla. The term originally referred to the cut of beef used in the dish which is known as skirt steak. Popular meats today also include chicken, pork, shrimp, lamb, salmon, and all other cuts of beef, as well as vegetables instead of meat. In restaurants, the meat is usually cooked with onions and bell peppers. Popular condiments are shredded lettuce, sour cream, guacamole, salsa, pico de gallo, shredded cheese, and diced tomatoes. The northern Mexican variant of the dish name is Arrachera.
     
Twitter
Pritesh Patel‏
@priteshpatel9
How do Mexicans keep warm in the winter? They use chicken for heaters! (fajitas)
2:26 PM - 24 May 2010
 
Twitter
supercujo‏
@supercujo
How do Mexicans keep warm? They use chicken for heaters.
7:39 AM - 17 Jul 2010
 
Twitter
Adam Jackson‏
@Adzman89
Replying to @j9avn29
@j9avn29 @faisalshah09 fajita? Chicken for heater? (Say it out loud!!!)
3:22 PM - 18 Jul 2012
 
Twitter
BattleRapDotCom‏
@battlerapdotcom
In case of D (quesadilla) around him, he’s too chicken for heaters/fajitas - NWX
6:36 PM - 26 Sep 2015
 
Reddit—Jokes
How do Mexicans keep warm?
submitted February 19, 2016 by Lrat
They use chicken for heaters
(I’m so sorry)
 
Twitter
Shit Jokes‏
@ShitJokes
How do Mexicans stay warm?
They use chickens for heaters.
1:32 PM - 28 Jun 2017