Ctrl-P (print) sounds like “control pee.” “Microsoft discriminates against incontinent people, with the continued insistence that they control pee to print” was posted on Twitter by “Boots McGoot is in the house” on July 15, 2011.
   
“‘Grandad asked me how to print.. i said control pee but hes not been able to do that for years’ love mock the week! hahaha” was posted on Twitter by Liam McDonald on September 23, 2012. “My Grandad asked me how to print. I said ‘Control P.’ He said: ‘I haven’t been able to do that for years!’ Credit: Gary Delaney” was posted on Reddit—Jokes on April 6, 2019.
             
The joke was probably said and popularized by English writer and stand-up comedian Gary Delaney on the British topical satirical celebrity panel show Mock the Week on September 20, 2012.
     
   
Wikipedia: Gary Delaney
Gary Justin Delaney (born 16 April 1973) is an English writer and stand-up comedian.
 
Twitter
Boots McGoot is in the house
@BootsMcGoot
Microsoft discriminates against incontinent people, with the continued insistence that they control pee to print.
6:10 AM · Jul 15, 2011·Mobile Web
   
Twitter
Liam McDonald
@LiamMcDonaldCfc
‘grandad asked me how to print.. i said control pee but hes not been able to do that for years’
love mock the week! hahaha
5:21 PM · Sep 23, 2012·Twitter for iPhone
   
Twitter
Jacquelyn
@jacccccng
Tried to teach my mom to print documents but ended up yelling at her to ‘control pee’
4:40 AM · Sep 30, 2012·Twitter for BlackBerry®
 
Twitter     
Emiibo said
@purtail
Me: so anytime you need to print and there’s no print button, use CTRL-P
My 94-yo grandfather: I wish I could control pee!
3:09 PM · Feb 27, 2017·Twitter for iPhone
 
Twitter 
XrX
@Xercez
Grandpa ask me how to print.  I told him to CTRL-P.  He said he hasn’t been able to do that for 15yrs.
6:58 PM · Aug 23, 2017·Twitter Web Client
 
Reddit—Jokes
Posted by u/lilapre April 6, 2019
My Grandad asked me how to print. I said “Control P”
He said: “I haven’t been able to do that for years!”
Credit: Gary Delaney.
     
Twitter
Max 4 Congress
@MaxxxCoffeeAlt
Old guys making jokes about computers like
“I wanted to print out something at home so I asked my son how, he said, ‘ctrl-p’. I said, ‘if I could control pee I’d be doing this at the library!’”
3:59 PM · Sep 10, 2019·Twitter for Android
 
Reddit—Jokes
Posted by u/maddamhussain May 5, 2020
My grandad asked me how to print on his computer…
I told him it’s Ctrl-P. He says he hasn’t been able to do that for ages.
 
LaffGaff  
HELPING GRANDDAD
By laffgaff May 11, 2020
My granddad asked me how to print on his computer.
I told him it’s Ctrl-P.
He said he hasn’t been able to do that for ages.