a heated competition to see who gives the best blumpkin. the winner is then crowned as the "blump king" or "blump queen"
dude im having a blump off this weekend, wanna come.
O yeah, but you know im going to be the blump king
O yeah, but you know im going to be the blump king
by vince mildew January 26, 2009

To abandon a friend (in most cases, best friend) within their presence in order to hang out or become best friends with another.
It is also used to address to someone who has "flew off".
It is also used to address to someone who has "flew off".
Guy 1 - "Your flying off on me?!"
Guy 2 - "No it's not what it looks like, we're just talking to each other!"
Guy 1 (a week later) - "Hey there fly off! How's your new friend?"
Guy 2 - "Screw you"
Guy 2 - "No it's not what it looks like, we're just talking to each other!"
Guy 1 (a week later) - "Hey there fly off! How's your new friend?"
Guy 2 - "Screw you"
by Johnthebapteest September 17, 2010

To skip or play hooky
by woahdicks February 6, 2018

by Asuriel August 28, 2021

by Frankie Puscher November 27, 2012

Person 1: Why are you cleaning your shoes?..They're already clean.
Person 2: SMT -_- I'm doin' this off of slack boy...chill!!! :|
Person 2: SMT -_- I'm doin' this off of slack boy...chill!!! :|
by Ann-Nisa October 28, 2009

by Kinchee August 6, 2016
