Nic-Kick

Nick-kick: when you're under the influence of marijuana and you use a nicotine product to boost the high.

Guy 1: Yo bruh I think i'm coming down
Guy 2: Damn you need a Nic-Kick?
Guy 1: Hell yeah *rips juul*

That'll Buff

Meaning that everything will be ok in the end. Something bad has happened but it will work itself out in time. Nothing can harm you, you are invincible.

Guy 1: Damn I just wrecked my fucking car in a head on collision
Guy 2: That'll buff bro

Guy 1: Fuck. My gf just broke up with me, I'll be alone forever
Guy 2: That'll buff bro, you'll find someone