Killing Dinosaurs 

a phrase meaning masturbation
it is a reference to an episode of family guy were a student asks a teacher "why are all the dinosaurs extinct?" and the teacher replies "because you touch your self at night"

what do you do with your free time at night?
i enjoy killing dinosaurs

Killing Dinosaurs by MarcTJoker January 16, 2011

Killday 

Noun; A person who is a complete buzzkill, has no trust in anyone, and goes out of his or her way to ruin an event in which he or she is unhappy with.

Wow she ruined our party because she was going to be out of town. What a Killday!

Killday by BushLover10 July 21, 2011

pussy killer

Someone good at getting laid then moving on to the next hookup.

She said he was a "pussy killer," and I believe it.

She gets so much strange. She's clearly a "pussy killer."

pussy killer by CUMbelievable June 2, 2016

Nay nay killua

You’re wrong shafay, try again nay nay killua

ShafAy ur wrong lol, nay nay killua 🐴

Nay nay killua by LolShafayUrWrong November 16, 2020

Killeen

A place where people's car payments usually equal more then their house payment, ghettoness is seen as respectable, all the houses look EXACTLY the same, the mall is scary, there are 20 billion places to eat but every one of them is always packed because there's nothing better to do, and the locals feed off enlisted Army members and their families like parasites.

"So I was in Killeen yesterday, and I couldn't get over how ghetto it was"

Killeen by Lottylula May 20, 2008

Killstreak 

A reward given to players in Newer Call Of Duty games after killing a certain amount of enemies without dying. Normally consisting of a support helicopter, dogs, or air-strike. Until Modern Warfare 2 was released and gave players many more rewards for camping and being little pansies abusing care packages and sentry guns. Higher streaks include Harriers that hover with chain guns, predator missiles you control and AC-130 and chain gunships that spawn kill.

Upon camping your ass off to a 25 killstreak you can call in a nuclear warhead to end the game, because by that time the entire server is sick of your shit and at least Infinity Ward is self aware of what they did to a "realistic" war shooter.

Smokeytoke420 with a title and emblem of a weed leaf obtained his AC-130 Killstreak where he proceeded to spawn kill the enemy team as they were punished for not camping.

Killstreak by Moonjabi January 6, 2010

killtrocity 

A killtrocity is *6* consecutive kills in Halo 2 within 4 seconds.

1: "I got a fucking killtrocity! Holy fucking shit!"

2: "So what, I got a killimanjaro once."

killtrocity by davidsakh March 6, 2007