McMicrophone 

A microphone that performs poorly. The term is most often used to describe gaming mics.

Online Gamer: I can't understand PoonSlayer6969's call outs because his McMicrophone is cutting out again.

McMicrophone by Sultry Santa October 23, 2020

Microphone Spamming 

Blowing excessively into the microphone just to piss people off.

"OH GOD DAMN THAT MICROPHONE SPAMMING NERD"

"FFFFFFFFFFFFFFFFF"

"MUTE HIM"

"FFFFFF"

Microphone Spamming by BadolzoN August 5, 2008

microphone check 

A form of foreplay, when a woman gives head before or during sex.

"bro she stopped half way through and gave me a microphone check."

"hey babe before we get started I'm gonna need you to check the microphone"

microphone check by Then8ie December 24, 2013

Kurt Cobain's Microphone 

A shotgun.

*Mike and Sarah are awoken by a noise in the middle of the night*

Sarah (Whispering): I think there's an intruder in the house

Mike (Whispering): Get me Kurt Cobain's Microphone and I'll give this noisy bastard something to sing about.

Kurt Cobain's Microphone by Sieffy March 21, 2017

Microphone check 

Is marijuana smoke or vape pulled through any the users device of choice.

Man she’s trippin’ she needs to go check the fuck out of a damn microphone.

I need to go around back and do a quick mic check (microphone check) my high is fading!

Microphone check by all_good_daze June 15, 2019

Meat Microphone

A description for the erect penis.

My girl and I were fooling around and I told her I couldn't hear what she was saying, and she needed to speak into my meat microphone.

Meat Microphone by rack757 November 10, 2011

microphone gangster 

Someone who hates on an indivdual but never says it to their face.

John is a microphone gangster, he always talks behind my back!!!

microphone gangster by Robby Bob March 27, 2008