flow

A hairstyle for men in which the hair, preferably wavy or curly, is worn long and swept back behind the ears.

Most often worn with a hat so that the back of the hair "flows" from underneath.

Depsite claims from the hockey and lacrosse communities to have started the trend, flows were first popularized by baseball players across the US.

Ex:

"Did you see deGrom pitch last night?"
"Yeah, dude's flow is sick."

"Bro, your hair is long ass hell, flow that shit."

"Dansby Swanson is the #FlowGod for real."