Killing my high 

an expression used by people under the influence of marijuana when they feel that someone has completely ruined their good mood, or "killed their high"

here is an example

*people hotboxing in a car*

Andrew: man, this is some good shit!

Eric: yea, it is- HOLD ON! DUDE! I JUST SAW A COP OVER THERE! HIDE THE BUD! HIDE THE BONG!

John: *looks for the "cop"*; what the fuck, thats not a cop, thats just an old lady in a white lincoln

Andrew: Eric! wtf!! your killing my high! stop being so paranoid.

Killing my high by robertbutler714714714714714 August 14, 2011

kennedy killer 

Also known as a PA-32 Piper Saratoga aircraft, known as such in reference to the aircraft John F. Kennedy Jr. fatally crashed. Also a reference to any aircraft flown that is within the pilot’s financial capability to own, but that its complexity is beyond the pilot’s skill and experience level to safely fly.

Immediately after that lawyer got his pilot’s license, he went right out and bought a Kennedy Killer.

kennedy killer by Teflon March 2, 2006

Killing Skylines 

Killing Skylines is a code word for masterbation. It is used by friends so other people around them wont know what their talking about.

Brandon: dude, why were you 15 mins late for the church?
Ricky: dude, "Suzzy the Supper Slut dose Texas 2" was on
the Playboy chanal and i was Killing Skylines.
Brandon: Ohh....

Killing Skylines by Rickybob28 December 28, 2005

thread killer

A person who makes some kind of awkward comment on a status thread, which stops the thread dead in it's tracks.

Some of the reasons for the thread stopping on the thread killer's comment:

1. Other threaders don't know this person well, so take the comment in a negative light.

2. They remember her/him being a "weirdo" in school/former or current job, etc.

3. Other comments in the past by the thread killer were confusing and possibly: crude, inappropriate or might appear hurtful, due to the absence of a smilies or winkies.

Look at how long this badminton status thread was going, until Brian commented this:

The best strategy is to try to hit the shuttlecock straight into the opponent's naughty places.

He sure is a thread killer!

thread killer by iconoguy April 3, 2010

spawn killer

In any Mulitplayer FPS, a player who waits for the opposing team's players to regenerate in a predetermined point, and launch an attack on them as they come out of the point back onto the playing field.

"Someone cap that fag spawn killer throwing artillery strikes by our checkpoint."

spawn killer by o August 22, 2003

killing me softly

the feeling you have when you are forced to endure something really unpleasant but avoiding that thing would actually be a lot worse

Studying for this test is killing me softly, but failing the test would be worse.

killing me softly by Ravenne April 18, 2009

lulz killer 

A common term in both internet and RL conversations. Someone who's sole ambition in life is to stop others from getting lulz or sometimes even epic lulz; often an internet user in a postion of power who tries to stop lulz-worthy acts of anarchy.

Person 1: WTF? Some n00b mod on wikipedia reverted my lulztastic edits to this page.
Person 2: What a Lulz Killer
--
Person 1: ZOMG this admin disabled my uber CS hacks; now I'll have to get headshots using only skill.
Person 2: o_O What an EPIC Lulz Killer

lulz killer by Master. A. N. Onymous January 11, 2009