What is Jeffin'?
1.
the act of kissing ass or brown nosing in a persons face when in actuality you have ill feelings toward that person.
being really nice to your boss to get that new opening that you want but behind his back you talk shit about him.
you - "hey boss did you get a new hair cut it looks great"
your boss - "bitch, stop jeffin'"
See
2.
The evolved word of "joking" with the slight different first name style change.
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'.
