“Don’t get enough fiber? Tough shit” was posted on the newsgroup alt.religion.kibology on October 8, 1996. The joke was popularized by stand-up comedian Jimmy Carr on the British television comedy panel game 8 Out of 10 Cats. “70% of men dont get enough #Fiber in they’re diet, Tough Shit! @jimmycarr Haha @8Outof10Cats_TV is Amazing 😊” was posted on Twitter by Glenn Whitter on October 15, 2012.
   
“Tough shit if you do not eat enough fiber” was posted on Reddit—Oneliners on April 5, 2019.
 
       
Wikipedia: Jimmy Carr
James Anthony Patrick Carr (born 15 September 1972) is a stand-up comedian, presenter, writer, and actor who holds both British and Irish citizenship. He is known for his deadpan delivery, dark humour, and heckler interaction. Carr moved to a career in comedy in 2000.
 
Wikipedia: 8 Out of 10 Cats
8 Out of 10 Cats is a British television comedy panel game produced by Zeppotron (a subsidiary of Endemol UK) for E4. It was first broadcast on Channel 4 on 3 June 2005. The show is hosted by Jimmy Carr and the current team captain is Rob Beckett.
     
Google Groups: alt.religion.kibology
Okay but shuttup okay?
lmerkel on BIX
10/8/96
(...)
—breakfast cereals
(“Don’t get enough fiber? Tough shit”)
 
Twitter   
Sam James
@JamJohnSames
30% of men don’t get enough fibre in their diet…........... Tough shit!
5:06 PM - 15 Oct 2012
 
Twitter
Ciaran Lavery
@Ciaraaaaaan
“70% of man don’t get enough fiber in their diet. Tough shit.” Pepsi’s gone everywhere
5:06 PM - 15 Oct 2012
   
Twitter     
Rav
@Raviola_K
“70% of men don’t get enough fibre in their diet. Tough shit” #8Outof10Cats #LMAO
5:06 PM - 15 Oct 2012
 
Twitter
Glenn Whitter
@GlennTwhitter
70% of men dont get enough #Fiber in they’re diet, Tough Shit! @jimmycarr
Haha @8Outof10Cats_TV is Amazing 😊
5:43 PM - 15 Oct 2012
 
Twitter
Ste Smith
@stesmith10
28% of men don’t get enough fiber in their diet. . . . Tough shit - Jimmy Carr
7:14 PM - 15 Oct 2012
   
Twitter
Gav
@gavinlayard
I’ve just read that 75% of all men don’t Get enough fiber in their diet.   
TOUGH SHIT….
8:17 PM - 15 Oct 2012
     
Reddit—Jokes
Posted by u/Mr_Ease October 13, 2015
75% of men dont get enough fibre in their diet..
....tough shit
   
Reddit—Jokes
Posted by u/J-4D March 14, 2019
Most people don’t get enough fiber in their diet.
Tough shit.
COMMENTS
doctorfinlay
100% jimmy Carr!
 
Twitter
🌧 Seleste 🌸
@cbSeleste
Most men don’t get enough fiber in their diet…
Tough shit.
Courtesy of @jimmycarr new special on #Netflix
3:06 AM - 15 Mar 2019
 
Reddit—Oneliners
Posted by u/jvlpdillon April 5, 2019
Tough shit if you do not eat enough fiber.
COMMENTS
GeniusMike
More like if you eat too much fiber. Fiber is what bulks it up. It’ll be diarrhea, or at least super soft and messy bordering on diarrhea if you don’t eat enough.