I had it done once.

The coach of our football team got the senior players to lead the rookies through a practice once where only the rookies wore equipment.

Anyways, we were doing a tackling drill called Bull in the Ring, where everybody forms a circle around one player who is in the middle of the ring obviously and a coach stands to the side. The coach throws the football to a player that is part of the ring and he has to run across the middle of the ring while the player in the middle tries to tackle him. If the player in the middle tackles him he leaves the middle and the player that got tackled is the new person in the middle. If he misses, he just continues on as the person in the middle. Anyways, there was a rookie I hated in the middle so I ran in and just pushed him over for fun so they made me stand in the middle. Then they passed it to one of our senior linemen who weighed almost 300 pounds, I weighed 180 and we both had no pads on. He dropped his shoulder into my face and basically killed it, but I still tackled him so I was stoaked.

My nose was fucked as fuck, figured it was broken so I went to the doctors like three days later and he made me get surgery.

Word.