An event where anyone can sign up to perform.
"Dude didn't you see her playing here last month ?"
"What ? But she's been playing guitar for what, like 3 months?"
"Yeah.. it was open mic , though. Everyone can sign up there"
The act of sexual intercourse without the use of a condom (the penis being referred to as a microphone due to its shape).
I can't believe Jerrod open-miced dorm girl last night.
a blowjob given to a man while he is performing a musical instrument. It has become a bit of a fetish among some women, given most often to men playing the guitar while laying horizontally.
Last night my girlfriend gave me an open mic
while I played Bob Dylan tunes.
Noun; Another name for a penis which happens to not only be inadvertently petruding from one's trousers, but is also errect.
"Shit boys, check out that fucker, he's showing us an Open Mic!"
"Is it me, or has that old woman at the bar got an Open Mic?"