“What’s blue and looks like a tomato?”/“A red tomato in disguise.”

A tomato riddle is:
 
Q: What’s blue and looks like a tomato?
A: A red tomato is disguise.
 
The riddle was posted on Twitter by “anti joke apple” on April 11, 2014. “What’s yellow and square?”/“A tomato in disguise” is a similar tomato riddle.
 
   
Twitter
anti joke apple
‏@antijokeapple
What’s blue and looks like a tomato?A red tomato in disguise.
11:05 PM - 11 Apr 2014
 
Twitter
Mayo Man
‏@Bmxmayo98
What’s blue and looks like a tomato?A red tomato in disguise.
11:06 PM - 11 Apr 2014
 
WDWMagic.com Forums
What’s blue and looks like a tomato?
Spoiler: Answer
A red tomato in disguise.
PUSH, Apr 12, 2014 #37793
 
Twitter
Zeke ټ
‏@SooZekee
What is blue and looks like a tomato? A tomato in disguise.
11:56 AM - 12 Apr 2014
 
Twitter
Anti Joke Apple
‏@AntiJokerApple
What’s blue and looks like a tomato?A red tomato in disguise.
6:01 PM - 3 Feb 2017