“What did Bacon say to Tomato?”/“Lettuce get together.”

The BLT sandwich contains bacon, lettuce and tomato, leading to a popular joke:
 
“What did Bacon say to Tomato?”
“Lettuce get together.”
 
The joke has been cited in print since at least 2011.
 
“What did the bacon say to the sandwich?”/“See you in the club!” is a similar joke told about the club sandwich.
 
     
Twitter
Jokes4us.com
‏@quickjokes
Q: What did Bacon say to Tomato? A: Lettuce get together! #iwantaBLT
1:14 AM - 31 Aug 2011
 
Facebook
Quick Jokes
September 18, 2011 ·
Q: What did Bacon say to Tomato?
A: Lettuce Get Together!
   
America’s Best Flowers
Newsletter 24 - Thursday, July 25, 2013
(...)
Q: What did Bacon say to Tomato?
A: Lettuce get together!
 
Twitter
EatStreet
‏@EatStreet
What did Bacon say to Tomato?  Lettuce get together! pic.twitter.com/qhEQaqeuzR
11:59 AM - 26 May 2014
 
Twitter
Ron Rhodes
‏@RonanRhodes
National Old Joke Day…
What did Bacon say to Tomato?
“Lettuce get together”
7:03 AM - 24 Jul 2014