McMongo 

A mongo who works in McDonalds.

"I went into McDonalds and it was a bunch of McMongos behind the tills"."

McMongo by McMongo January 16, 2013

McMongo 

A McMongo is when they take 2 Mcdoubles and remove the top from one and the bottom from the other and put them together for a whacking cheesy 4 burger big bite!

I just had to post..
I have ordered McMongo burgers at McDonald's for about 10 years!

Hey, can I get a small fry and 2 McMongo burgers , I'm starving!

McMongo by Stan383 December 1, 2016