A Star Wars riddle is:
   
Q: How did Darth Vader know what Luke got him for his birthday?
A: He felt his presents.
   
Christmas (instead of birthday) is also used in the riddle. The pun is using “presents” for “presence.”
   
The joke was posted on the newsgroup rec.arts.sf.starwars.misc on December 27, 1997.
   
       
Wikipedia: Star Wars
Star Wars is an American epic space-opera media franchise created by George Lucas, which began with the eponymous 1977 film and quickly became a worldwide pop-culture phenomenon. The franchise has been expanded into various films and other media, including television series, video games, novels, comic books, theme park attractions, and themed areas, comprising an all-encompassing fictional universe.
         
Google Groups: rec.arts.sf.starwars.misc
Snowy’s Advent Star Wars Quiz Answers  
Snowy
12/27/97
(...)
24. He felt his presents. 😊
   
Google Groups:alt.games.creatures
AGC SQUADRON
Paul Richardson
5/17/99
(...)
P.S
Q. How did Darth Vader know what his son was getting for XMas ?
A. He felt his presents (presence!)
 
Google Groups: alt.humor.puns
Puns of the Weak 12/27/02
Stan Kegel
12/27/02
(...)
How did Darth Vader know what Luke Skywalker was getting for Christmas?
He felt his presents. (Simon Champion)`
 
Twitter
Figrin D’an
@FigrinDan
Only three people were killed last night. Heard a bad joke after:
How did Vader know what Luke was getting for Xmas!?
He felt his presents.
7:08 AM · Feb 3, 2009·Twitter Web Client
 
Twitter
Tony Hazelden
@tonyh98
Q. How did Darth Vader know what Luke was getting for Christmas?A. He felt his presents.
12:11 AM · Apr 2, 2009·Twitter Web Client
 
Reddit—Jokes
Posted by u/Dippingsauce86 April 5, 2016
How did Darth Vader know what Luke got him for his birthday?
He felt his presents.
     
Reddit—Jokes
Posted by u/RonBurgundy2148 December 10, 2016
How did Luke Skywalker know what Darth Vader got him for Christmas?
He felt his presents.
 
Reddit—Dadjokes
Posted by u/atruemermaid July 6, 2018
How did Darth Vader know what Luke got him for Christmas?
He felt his presents
 
Twitter
Señor McPretzel
@senormcpretzel
How did Vader know what Luke got him for his birthday?
He felt his presents #StarWarsDay #MayThe4th
GIF
10:37 AM · May 4, 2020·Twitter for iPhone
 
Reddit—Dadjokes
Posted by u/robdelterror May 4, 2020
How did Luke Skywalker know what Darth Vader got him for his birthday?
He felt his presents