Someone who uses the phrase "Lol" too often, and/or doesn't really laugh.
Poodle132: I went to the store yesterday and I fell.
Poodle132: It wasn't really that funny.
Poodle132: You Lol Monster.
A LOLMONSTER is someone who is very funny and tells many jokes. He/She is always the funniest person in the room and can make anyone laugh at anytime.
Bob: Dude, here comes the LOLMONSTER
LOLMONSTER: Hey guys, whats up?
Everyone: HAHAHAH, you're hilarious.
Something you say when you hear a joke that is utterly and insanely hilarious. An awesome word used by only awesome people. If you make fun of someone who uses this word, you are lame because it is the coolest word in the universe.
Boy: What is the difference between a smart blonde and a UFO?
Brunette: I dont know , tell me.
Boy: There have been sightings of UFOs.
Brunette: OMG.... lolmonster!!! such an epic joke!!