It was the bong hit that sent N.F.L. teams running.
Minutes before the N.F.L. draft was scheduled to begin Thursday night, a video was posted on the Twitter account of a highly touted offensive lineman from the University of Mississippi who was projected to be one of the top picks. The video appeared to show the player, Laremy Tunsil, inhaling what might have been marijuana through a bong that was attached to a gas mask.
It was unclear when the video was recorded. No matter, the damage was swift and highly visible for Tunsil: He was in a draft free fall, passed over by each of the first 12 teams.