“Why did the stoner put laxatives in weed brownies?”/“For shits and giggles.”

A pot brownie riddle is:
 
Q: Why did the stoner put laxatives in the pot/weed brownies?
A: For shits and giggles.
   
“I think halal vendors put laxatives in the food for shits and giggles” was posted on Twitter on October 1, 2009. “I put laxatives in my pot brownies for shits and giggles” was posted on Twitter August 14, 2011.
 
The joke has been printed on several images.
   
   
Twitter
Chris Mendez‏
@thechrismendez
I think halal vendors put laxatives in the food for shits and giggles
5:30 PM - 1 Oct 2009
 
Twitter
The Peoples Voice‏
@onefilthymouth
I put laxatives in my pot brownies for shits and giggles
7:14 PM - 14 Aug 2011
 
Google Books
More One Liners, Jokes and Gags
Compiled by Grant Tucker
London: Biteback Publishing
2012
Pg. ?:
I decided to put laxatives in my hash brownies just for shits and giggles.
 
Twitter
Gage Carter‏
@GageTCarter
I put laxatives in your weed just for shits and giggles
5:14 PM - 13 Mar 2013
 
Reddit—Jokes
I decided to put laxatives in my weed brownies…
submitted August 11, 2013 by mmmmCake
Just for shits and giggles!
 
Twitter
ROB_add‏
@nah_frgtit
i decided to put laxatives in my weed brownies, ya know,  just for shits and giggles~
12:23 PM - 11 Aug 2013
 
Facebook
What Is This?
April 15, 2014 ·
Put laxatives in pot brownies for shits and giggles.
 
Reddit—Oneliners
I put laxatives in the pot brownies for shits and giggles. (self.oneliners)
submitted December 13, 2015 by thetomester13
 
Reddit—Jokes
Why did the stoner put laxatives in the weedbrownies?
submitted March 22, 2017 by SciSlap
For shits and giggles.