A.M. 

A.M. or "ante meridiem" means "before noon." Anytime after 11:59 P.M. and before 12:00 P.M. is A.M.
If it is A.M. it is morning.

It's 1:51 A.M. and I should go to bed

A.M. by Beast404 September 13, 2006

A.M. 

Someone who doesn't spend there time wisely or doesn't go out very often and is unsocialable.

"What an A.M. he never comes out!"
"Going out and getting nothing? A.M!"

A.M. by Kirke February 17, 2009

A.M 

A.M slang for an Attempted Murder. Used heavily in UK.

" I just caught A.M last week then went and burned down my clothes - young dizz"

A.M by Lendary stat October 20, 2019

a&m 

Ass and mouth or ass to mouth

We totally did A&M last night and it was fucking amazing

a&m by Real name 00 December 5, 2017

a/m

Abbreviation of away message

OMG look at blah's new a/m!

a/m by EYIN! August 26, 2006

a/m

Actually masturbating. Only to be used when the person is actually masturbating (hence a/m). Kind of like 'mol' (masturbating out loud), but people use 'mol' when they are not masturbating.

Bob says:
Hey Aaron! Seen this chick I'm dating?

Aaron says:
a/m Bob, she's really hot.

a/m by bong rouge January 3, 2008

A.M. 

short for describing the morning hours of the day.

"...Wake up in the A.M., compose a beat
I bring the fire til you're soaking in your seat"

A.M. by 7aipan September 8, 2006