Source Mic 

While playing a game that runs on the Source Engine (Counter Strike: Source, Team Fortress 2) When a player yells into their mic, it creates a loud crackle knows as over modulation.

This is a common technique that mic spammers use to annoy players.

Spammer: HEY!!!GUY!!!!GET!!!TO!!THE!!POINT!!!1!1!!

Player One: OH MY FUCKING EARS!

Player Two: Dude, you've got a really bad case of Source Mic!

Source Mic by Nope.avi June 30, 2011

mickey source 

Mickey source. Known from the Seinfeld episode "The Revenge".
A Mickey source is a drug dealer.
From the shortened form for "mickey finn."
Used to describe surepticiously slipping someone drugs,
poison, laxative, etc. - usually in one's drink.
Commonly believed to be named after notorious Chicago
pickpocket, thief and bartender - Mickey Finn.

Jerry: Where did you even get a mickey? I can't believe i'm saying mickey!
George: I have a source.
Jerry: You've got a mickey source.

mickey source by mamama madsmaurstad November 6, 2007