NLS
Next Level Shit.
Used among traceurs/freerunners to describe crazy ass tricks.
payrunner: Hey bro did you see Team Farang's new video Boss Mode?
freerunner: Yeah I did, they threw some NLS!

payrunner: Hey did you see the shit Zyrken pulled at the Tempest Pro Takeover?
freerunner: Yeah man they gave him the NLS award.