M50 bananas - A ridiculous expression that people throw around like they k

A ridiculous expression that people throw around like they know what it means, but they're just faking it.

My mom said M50 bananas and I had to explain it to her.

I used M50 bananas in a tweet and got 100 likes from people who don't know what it means.

My friend tried to sound smart with M50 bananas and failed.