McDiddys 

A place people go to get fat.

Bob: Hey, Jim, let's go to McDiddys!

Jim: I would, but I don't want to get fat!

McDiddys by thangforyou August 2, 2008

mcdiddy 

A name used to describe a really chill guy. Normally he will have a YouTube channel with "mcfly" in the name. Also insanely freaky and will do whatever you ask.

Guy 1: "Yo, what's up Mcdiddy!"

Guy 2: "I am not a Mcdiddy bro."

Guy 1: "but you're such a freak"

mcdiddy by Skibby_ February 14, 2025