slm 

SLM is an abbreviation for the phrase "Sea la madre". It's a common phrase in Puerto Rico typically used to express frustration or anger.

SLM que calor hace.

SLM its been the longest day.

slm by caribbeangurl87 May 14, 2020

slm 

Often said on IRC, this is short for "salaam", or hello.

People from Malaysia, Indonesia, Turkey, etc like to say this.

<malaysian_guy> slm
<you> slm
<malaysian_guy> a/s/l?
<you> Sorry, i dont speak Malaysian.

slm by Tadou January 6, 2005

slm 

sl stands for say less man. When you understand someone fully and clearly and you don't need any of their further explanation.

Whitney : "Bro bare mens keep hitting me up"
Chanel: " Shut the fuck up, you're fucking ugly"
Whitney: " wow slm"

slm by kinggwhitney June 19, 2017

SLM 

Slow and lonely masturbation, commonly taking place in bedrooms, bathrooms, dorm rooms, and locker rooms and resulting in a distinct smell.

Nate conducted in SLM shortly after talking to a girl for the first time in months... The locker room was never the same again.

SLM by Ze Coggernaut March 5, 2011

SLM 

It literally means Single Lives Matter

*some cute couples shit appeares on wattpad*

Reader: #SLM no need to remind me that I’m single *sigh*

SLM by TheSmartGyal June 22, 2022

slm 

slutty little mustache

- wow, that guy over there has a good mustache!

-yeah, that’s an slm for sure

slm by stinkytiger September 29, 2023

slm 

Single Lives Matter (slm)

*sees a happy couple*

“slm”

slm by mixthebean August 22, 2021