This is a bit of a wild guess but

NURF = NERF, obviously.

I think it's going to be the opposite of URF. Regular cooldowns are longer, attack speed is nerfed, summoner spells have a longer CD. I dunno, but it seems like a Riot way to troll us all.

: Hai gais were bringing bak urf : yaaaaaay : lol jk actuly is nerf : ...wut : ayy lmfao