STM

Short for Stab that Mutherfuker

John says "he's a dickhead ay"
Ned Says "fuk yea STM"
John Says 'Haha yeah"

by JL Sikkent March 8, 2009

STM

"Smile To Myself" - When you're not actually laughing (or feel that LOL would be overkill), but the text joke did get a smile out of you (internal or external).

A: "are you allowed to be nudey in a nudey theater?"
B: "good question! stm"

by WordNerd2 November 8, 2012

STM

Acronym for "spanking the monkey".

I gotta go on cam to STM before the wife gets back.

by livva_nyc February 28, 2009

STM

One who pretends to be good at a particular sport, but in reality cannot play it whatsoever. Can be used in a sentence with yayaya with severe sarcasm.
Also can be used as an insult term in basketball to an opposing player on the court who cannot play according to regulation(s).

"Yayaya! Way to shoot that airball, you're not STM."

or

"I enjoy the way you got blocked at today's game. Continue with your STM-ness and you'll be an all-star soon!"

by Thomas December 4, 2003

stm

sent to most

"did you see what jill said, it said "stm" but i think she only sent it to me"

by dragemdragon April 23, 2017

stm

stm means short term memory

jack : i forgot yersterday the jokes you told me
ben : you stm is it?

by lianms April 12, 2009

Stm

Smiling too much. When you’re smiling a lot while texting someone.

‘Oh my god I’m stm’

‘Jason was making me stm last night’

by Babieeegirlll April 26, 2020