1. to blaze; to toke; to smodaweed
2. Youth Expression Forum (this is a common occurrence after the actions listed in definition #1)
etymology: serendipitous misspelling of the word "YEE", as in "YEEEE, son!"
side effects: love for your homies, running through your blood vessels
(adj.)- YEF'd, YEF'n, YEFAF (YEF'd As Fuck!)
H: Finna Yef?
J: Fsho my niggy, aint no schwag in the bag--
H: Let's smoke that cali weed!