NFL investigating George Pickens' explicit message on eye black during Steelers game: report

The NFL is investigating Pittsburgh Steelers wide receiver George Pickens for wearing an accessory that isn’t allowed, according to ESPN. 

Pickens appeared to have eye black with an explicit message when shown up close during the "Sunday Night Football" broadcast. 

The phrase "Open F---ing Always" appeared to be written in silver or white across his eye black. The explicit message is enough for the league to investigate.

All messages on any part of a uniform must be approved before a player takes the field.