Complex Sports shared a video of Mayfield and the Browns standing in the tunnel. As Bengals fans taunted the quarterback, he responded, "Why don't you come down here and tell me that to my face?"
The Browns suffered their fourth defeat in five games Sunday. Mayfield had a typically erratic performance in the 33-23 loss, throwing for 279 yards, three touchdowns and three interceptions while completing 12 of his 27 passes.
Mayfield has never been shy on the field or off it. He famously "planted" an Oklahoma flag in the middle of Ohio Stadium following a 2017 win over Ohio State. He was also suspended for the opening drive of a game against West Virginia for making an obscene gesture toward the Kansas sideline the week before.
Mayfield's antics are easier to dismiss when his team is winning and he's en route to a Heisman Trophy.