by Karl White December 12, 2007
When your gut begins to throw a temper tantrum. Starting with biohazardous farts and slowly building to a terroristic level shit.
Dawg, I was in the middle of class when I started Jeffin'. It was brutal. 6 people died. I'm probably going to jail.
by BasedButt March 03, 2023
The act of kissing ass and/or brown nosing in a person's face when in actuality you really have ill feelings toward that person.Also, this is Kansas City Lingo, but a humongous single. Jeffin' is ass kissin', then talkin' trash, dissin'.
When you see me rolling up, stop Jeffin' stop Jeffin', they be like what's up? Stop Jeffin' stop Jeffin', yeah you. Stop Jeffin', we ain't cool. Stop Jeffin'.
by the_waitresss October 29, 2011
That fool is a jeff, he never pulls through when he says he will.
That fool is jeffin, he said he would be here hours ago!
That fool is jeffin, he said he would be here hours ago!
by 1904LxVE April 28, 2011
Person 1: "Yo, did you see Jeff Jeffin' at the party last night?"
Person 2: "Holy shit yeah! it was awesome!"
Person 1: "He did it so productively."
Person 2: "Holy shit yeah! it was awesome!"
Person 1: "He did it so productively."
by tybler June 26, 2023
Outdoor activity in Jefferson County Missouri, the greatest fucking county if them all. Often involves consumption of cheap beer (normally Busch Light). Most of these activities would be illegal anywhere else, but not in JeffCo, where you can do whatever the fuck you want.
by Bardbarian53 June 25, 2017
Larry: I bought a 2004 Dodge SRT-4 for just one hundred bucks off some old lady.
Hilary: No way!
Larry: I'm just jeffin'.
Hilary: No way!
Larry: I'm just jeffin'.
by Elizabeth L. January 25, 2005