There’s a difference between “telling dad” jokes and telling “dad jokes.” The former is told to a father, while the latter is usually told by a father. A joke was posted on Twitter on June 4, 2014:

“I don’t always tell dad jokes, but when I do he laughs.”
 
The classic dad joke has been printed on many images. The joke has been popular on Father’s Day.
   
     
Twitter
Jokes for Palms‏
@Jokesforpalms
I don’t always tell dad jokes, but when I do he laughs
8:35 AM - 4 Jun 2014
 
Twitter
Noxite‏
@AlmightyNoxite
I don’t always tell dad jokes, but when I do he laughs at them
4:45 PM - 20 Mar 2015
 
Twitter
Jolly St. Nick‏
@Nick_triv
I don’t always tell dad jokes, but when I do he laughs.
12:58 PM - 8 Sep 2015
 
Reddit—Dad Jokes
I don’t always tell dad jokes… (self.dadjokes)
submitted September 21, 2015 by insideofthismachine
...but when I do, he likes them.
COMMENTS
amor_slender
This is the pinnacle of dad jokes
Bravo , sir, bravo.
 
Reddit—Jokes
I don’t always tell dad jokes
submitted August 24, 2016 by Skisce
But when I do, he laughs
       
Twitter
Shit Jokes‏
@ShitJokes
I don’t always tell dad jokes…
But when I do, he laughs.
2:34 PM - 1 Sep 2016
 
Facebook
‎Mohit Handa‎ to Dad Jokes
December 12, 2016 · Heidelberg, VIC, Australia ·
I don’t always tell dad jokes. But when I do, he laughs
 
Reddit— Dad Jokes
I don’t always tell dad jokes but when I do, (self.dadjokes)
submitted March 1, 2017 by IAMBiSH
He laughs.
 
Reddit—Dad Jokes
I usually don’t tell dad jokes… (self.dadjokes)
submitted June 25, 2017 by deathshotCS
But when I do,he laughs.
COMMENTS
Dark_Devin
I think this may be the most reposted joke on here.