This saying is originally from a rather obscure meme that includes Max and Ruby. At the end of the comic, Max exclaims "BEEP BEEP LETTUCE" in response to a question Ruby asks.
Essentially, Beep beep lettuce can be used as an interjection whenever one feels it's appropriate or just want to mess around with whoever they are with.
Person 1: Just grab me the Ragu from the stock room, ok Jimmy?
Jimmy: BEEP BEEP LETTUCE
Person 1: ...
101π 7π
A legendary meme god who is the greatest athlete of all time
Beep Beep lettuce is a god at soccer.
19π 18π
Hitting it from behind and honking a horn
guy1: I beep beep lettuced her ass
4π 12π
Sounds like the japanese phrase "γγΌγγγΌγγ¬γΏγΉ" which is pronounced be-pube-puretasu which sounds like beep beep lettuce. It means "your eyes are stars"
Jim: beep beep lettuce
Ruby: guacamole nigga penis have my babies
36π 14π
the love of my life also can be altered to make beep beep communism.
guy 1: wheres all the food gone
guy 2: beep beep lettuce
3π 1π
Beep Beep Lettuce
Mike: Hey Jim. Jim: Beep Beep Lettuce
12π 9π
Friend: Alright, beep beep lettuce!
Me: beep beep lettuce!
47π 71π