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*British* (participle), verb: to kef
A rather hard slap to the back of the neck.

NOTE: Does not mean, nor does it imply masturbation.
Dude 1: HOLY FUCK, JUSTIN BIEBER!
Dude 2: You deserve a mighty good keffing.
Keffing by Fizzle12345671 February 18, 2011
Related Words
She's funny, creative and a loyal friend. She's naturally quiet but loves to have conversation, yet not a people person. In other words, she's a human contradiction. She loves strongly and hardly ever gives up on anyone or ever holds a grudge. Very mature, though, a child at heart. Very caring and understanding. Will never judge you based on your flaws unless absolutely necessary. She's beautiful inside out and is a rare gem just like her name!
Keffian is such a beautiful name.
keffian by Mickey_J60 July 25, 2018
A new word on the streets meaning masturbation over ones own faeces to intoxication...
Boca was keffing over his mother.
keffing by NuKeZ December 10, 2004
A nickname for your boyfriend or friend who is named Kevin when he is ignoble, or in Swedish "keff".
Keffin don't do that!
Keffin by Girls/girls/boys October 14, 2018

Stealthie 

when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.

This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"

FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"
Stealthie by gwenhyfar October 2, 2016
Word of the Day on May 25, 2026

Summer Teeth 

When someone has a lot of missing teeth.
Mannn, that dude has summer teeth!
What do you mean?
Summer here, summer there...
Summer Teeth by BeckPot August 2, 2012
Word of the Day on May 24, 2026