1 Another way to say 'fucking'. Usually used to refer to doing a devious act.
2 the act of spamming the L trigger in Rainbow six Vegas 2, also known as taking cover. This tactic is used by faggots.
1"Hey, i'm going to go neefing around some fuck 'tards, wanna join?"
2"Haha! You'll never win now, i'm neefing it!"