Top definition
1.to be doing something very good

"john was killin it all day long in the competition"

2. to do your own thing, in a sorta funny way
1. "john was killin it all day long in the competition"

2. "max is killin it in his overalls"
by alex July 16, 2004
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
2
did it very well, you were the best at it,did something extremly good
when I dance I be killin It, I was killin it when I was singin that song
you killed it homie
by Nikki Banks April 25, 2009
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
3
To do something with the best of your ability; to become a legend in the process or to achieve 1337 status whilst performing the said phrase.
B: Hey YO JOE!! What did you wind up doing last night ?

Joe: YO SON, I WAS KILLIN IT!

B: OHHH SHNAP! THATS WHATS UP MY NINJA!
by FPSTOM January 19, 2010
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
4
Someone who is doing very well in every facet of life
by BRICKO November 18, 2010
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
5
I walked in on Johny killin it with Kortnee.
by Mr.Business April 27, 2004
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
6
A way of saying someone is really good at dancing or other active motions
Ay yo brah u is killin' it from party rock anthem.
by xXPowaXx September 05, 2011
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug
7
Masterbation; Whacking off; touching one's self
"I walked in on Keefer Killinit yesterday."

Also used:
Ben was killin' his dick yesterday.
by Killit King February 05, 2010
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug