Neen is an adjective used to describe a particular steeze that was introduced by pro skater Neen Williams. Neen can be used on any heelflip variation that has high pop and ninja kick type flick.
Jabroni: Yo Dio, peep this neen ass heelflip I’m bouta pop.
*pops the heelflip*
Dio: God dayum that was neen as fuck you popped like 10 stories high my brother and that ninja type flick was insane.
Jabronius: You don’t have to tell me you goofball you.