Well to be fair, if youre going to call anyone a retard, it might as well be someone thats too retarded to understand it, no?
Its a hockey word, flow. A synonym for hair. Its not uncommon for someone to say someone has, "sick flow". It drives me nuts. Some of these guys, professional and youth, take their hair so seriously. In Minnesota there was an All-Hair team for the state hockey tourney. Example: Jags has sick flow