L: 

A crooked or sideways smile. Used in chats or text to show a smug look of contentedness.

I beat that son of a bitch in Halo L:

L: by Magnetzes July 7, 2011

L: 

The greatest emoticon ever made. It refers to Edward Cullen's (of the novel Twilight by Stephenie Meyer) crooked smile. Usually used by twi-hards. Sometimes interjected to start a Twilight related discussion or just to spread the love of Edward.

Person 1: God I love Edward L:
Person 2: IKR?!?!?!?!?!?!?!?!?

L: by pointeshoejen April 4, 2009

L_ 

When PVC finds the elundus core or some grease monkey puts "L_ L_ L_ L_ L_ L_" in text to speech.
"L_" sounds like "elundus core", this has become a running meme with the xQc fanbase.

"The Elundus Core was a 6.2-kilogram (14 lb) subcritical mass of a previously undiscovered isotope of plutonium measuring 89 millimeters and was previously held in Felix "xQc" Lengyel's basement. It now lives in the depths of yellowstone waiting to explode."

monkaW in chat boys.

Grease monkey donation kid: "L_ L_ L_ L_ L_ L_ L_ L_ L_ L_ L_ L_, 2? 2? 2? 2? 2? 2? 2? 2? 2? 2?, 777777777777777777777777
PVC: "MODS! MODS! MODS!

L_ by hydra247 July 12, 2019

L 

L mean "loss" or "lose", depending on the context it is used in.

He just took that big L.

L by EZ$niper June 27, 2016

L 

To lose, or to take a loss. The L comes from the word lose/ loss.

Me: Jermaine got beat up!
You: He took a L!

L by Tvhj_ December 4, 2013

L 

Catching an L means catching a loss. In this sense, you catch an L if you say something stupid or, if you try to sound intelligent but are proved wrong.

1. Sarah says, "Has anyone ever noticed that "Santa" has the same letters as Satan? Isn't that weird? What are your thoughts?"
Cathy responds, "And Santa is also the word for Saint in many languages. And since the figure of Santa Claus is based off SAINT Nicholas, its not surprising. So nice try, but you failed."

In that case, Sarah caught an L because she tried to prove an invalid point.

L by Nicole.x3 February 1, 2009

(L) 

On msn, typing (L) will display a heart. (L) means a heart, or love, etc.

Hey Joe, had fun at the movies (L)

(L) by kelsiekdfjdl November 11, 2006