“What do you call a sad watermelon?”/“Melancholy.”

A watermelon riddle is:
 
Q: What do you call a sad watermelon?
A: Melancholy.
 
“Melon-choly” or “melon-cholic” are sometimes given as answers in the joke. “Oh yeah, me and my friend are writing a story about a sad watermelon. It’s called ‘Meloncholy’ geddit?” was posted on Twitter on October 3, 2012.
   
“What do you get when you mix a broccoli and a melon?”/“The saddest vegetable: a melonccoli” is a related riddle.
   
     
Twitter
Dumbledore Lives‏
@DumbledoreLives
Oh yeah, me and my friend are writing a story about a sad watermelon.
It’s called ‘Meloncholy’ geddit? xD
~Nimbus ze Admin
3:23 PM - 3 Oct 2012
 
Twitter
🌹Alison Cowan 🌹‏
@AlisonCowan
Replying to @m_sherrington
@m_sherrington Love it. I see your beetroot and raise you a sad watermelon.
)“FEELING A BIT MELONCHOLY” is on the picture of a watermoelon.—ed.)
1:33 PM - 6 Jul 2014
 
Twitter
Austin Strayer‏
@Austin_933
What do you call a sad watermelon?
MELANCHOLY!!
8:24 PM - 20 Jan 2015
   
Twitter
Morgan Coolick‏
@morganshayee
“What do you call a sad watermelon? MELONcholy” -Halli Rider
4:21 PM - 19 Aug 2015
 
Twitter
~MiniToaster~‏
@FuckITripped
What’s a sad watermelon?
MELONcholy
7:35 PM - 19 Jan 2016
   
Twitter
JAKEALLYN‏
@jakeallyn
what do you call a sad watermelon?
melon-cholic!
:D :D :D
3:28 PM - 29 May 2016
 
Reddit—Jokes
What do you call a sad watermelon?
submitted September 21, 2016 by imfuckingvietnamese
melancholy
 
Reddit—Jokes
What do you call a sad watermelon?
submitted June 7, 2017 by DoubleclickEB
Melancholy