Kirby 

A girl with big boobs and fake eyelashes who frequently masturbates at other people's houses.
Yes, her real name is Kirby. Her mom smokes a lot of anything.

hey, who is that?

Oh, thats Kirby. She is hott as shit, but can't take a dick.

Kirby by hott as shit, can take a dick November 1, 2008

Kirby 

An over-weight / obese person, round in shape.

Wow, look at that Kirby!

Kirby by Ellen The Felon January 6, 2007

Kirby 

More formally known as "The Cum-Shot Kirby".
This word usually defines a semen-like fluid being stained on a public place in which way seems impossible for a human being to accomplish.

Guy 1 with a boner: Dude, how did you get that stain on the ceiling?

Guy 2 with a boner: Cum-Shot Kirby man..

Kirby by Cpt.Stiffy September 28, 2009

Kirby 

A Kirby, by definition, occurs when you're piss drunk, pass out, throw up in the midst of your passed out state, and wake up to a girl giving you a hand job.

Bro, I got shitfaced last night and woke up at 4 in the morning to a girl giving me a Kirby.

Kirby by PKA208 August 24, 2010

Kirby 

A variation of the standard spliff. With a tobacco to hash/bud ratio of 1:4 or higher.

Dude, we rolled a Kirby last night. It murdered us.

Kirby by Chief Tiberius February 20, 2011

KIRBY 

A lying, cheating, piece of shit person and also a dead beat sperm donor.

Man I hate being a Kirby.

KIRBY by enoughisenough September 8, 2010

Kirby 

Kirby refers to someone who has an abnormally curvy penis.

Leah told me that Miles has a pretty bad Kirby.

Kirby by FlottyYomama May 23, 2016