Killin is an amazing guy who may come off as mean, but has a very sweet side to him. He'd be willing to lose hours of sleep all for you. He's full of jokes and laughter, and may even love to do stuff like skateboarding. He may not relate to a lot of things but Killin will be there for you no matter what.
You know Killin? He's pretty cool, don't you think?
by _adrianneee_ February 15, 2021
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Five kills in a row without dying, first said by gamers on the Halo 2 online community during a ranked SWAT match.
As said by an overly-hyper Halo 2 gamer: "Oh, shit! KILLIN' SPUR!!"
by Spartan VI June 26, 2010
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A series of actions that puts the world's hardest workers to shame, it would look similar to Rocky Balboa as the wolf of wall street.
Luke: did you hear Dan worked 80hrs this week?
Gary: that's it?
Luke: HA! The guy also pulled off a triathalon, marathon and an Inca trail marathon this week.
Gary: jeez... that guys killin' it
by dudeskillinit July 9, 2020
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The highest possible level of satisfaction with life only to be achieved by young white males who often go to parties, have plenty of money, and slay poon on the reg. You only know you're 'Killin' it' when you're plastered, throwin up the Shaka (surfers' hand gesture), and yelling "I'M KILLINNNN ITTTTT"
Friend: "How yah doin pal?"

Matt: "Don't worry about me man, (shotguns a brew) I'M FUCKIN' KILLINNNN ITTTTT!"
Friend to other Friend: "Hey don't bother Matt, he's Killin' it right now.
by Berry McCockinnner March 20, 2018
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