“The two happiest days in a time traveler’s life…” (joke)

“The two happiest days of a man’s life—the day he bought the boat and the day he sold the boat” is a well known joke.
     
“The two happiest days in a time traveler’s life: The day they complete their time machine and the day they stop themself from completing their time machine” was posted on Reddit—Jokes on October 6, 2021. “The two happiest days in a time traveler’s life: The day they complete their time machine and the day they stop themselves from completing their time machine” was posted on Twitter by Jimmy RevJim Olsen on October 8, 2021.
   
     
Reddit—Jokes
Posted by u/Phasmus October 6, 2021
The two happiest days in a time traveler’s life:
The day they complete their time machine and the day they stop themself from completing their time machine.
     
Facebook
Leah Groce
October 8, 2021 at 9:31 AM ·
And Now This…..
The two happiest days in a time traveler’s life: The day they complete their time machine and the day they stop themselves from completing their time machine.
 
Twitter
Jimmy RevJim Olsen
@mybuddyjimmy101
The two happiest days in a time traveler’s life: The day they complete their time machine and the day they stop themselves from completing their time machine. #AndNowThis
10:56 AM · Oct 8, 2021·Twitter for iPhone
 
Facebook
Katie Collins
October 8, 2021 at 1:05 PM ·
And Now This…..
The two happiest days in a time traveler’s life: The day they complete their time machine and the day they stop themselves from completing their time machine.