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1.
someone who is so much of a loser that they are laughable, or lolworthy.

This could be for a wide range of reasons.
Person 1: Dude, did you hear about Esteban getting kicked in the balls by that girl last night?
Person 2: Haha, yeah, that seems to happen all the time - what a lolser
by DaveZeroZero March 14, 2008
 
2.
1.Somebody who says "lol" when they aren't typing and they actually say it out loud.

2. A person that types lol way to many times, even when something isn't funny.
The following conversation did take place in real life and is said out loud.

Person 1: Lol
Person 2: Wow, you are such a lolser for not actually laughing and just saying lol, get off the computer sometime.
by Matt9236 February 01, 2010
 
3.
Noun. Similar to loser, except you laugh at the person at the same time.
BF1942 idiot #1: "I just crashed my plane into the ground."
BF1942 idiot #2: "You lolser."

Also see noob, douchebag, and trekkie.
by Sarpedon7777 September 28, 2005
 
4.
when you're laughing at someone and they think you're laughing with them.

ridicule, loser
"Hahahahah, you LOLSER."
by marilyn monrobot October 11, 2004
 
5.
laughing stock, loser...a loser that is completely wothy of laughing at
bert is such a lolser!!!
by chkxfactor March 10, 2004