I played high school ball and also wrestled...its a fairly common thing in the bottom of the pile. Certain teams were notorious for it and our coaches would tell us to be prepared to "get your oil checked". Eyes, balls and arseholes are the primary targets. Especially on fumbles because they want you to drop the ball to protect your bum. It's kinda rare to just see a big guy do it like that out in the open though.

You should see what Rugby and ARF players do to each other....