re: Did you get any sports terminology confused growing up?

My biggest question mark is this:

In football, during a kickoff, once the ball goes 10 yards it is a live ball able to be recovered by the kicking team up to but not including the goal line. In other words, if the kicking team recovers the ball 1mm short of the goal line, they have first and goal right there.

Why can't they recover the ball in the end zone for a touch down? I remember jumping out of my skin one time because an LSU returner just let the ball lay in the end zone without picking it up. I was going out of my mind. "Oh My God!!!! They are going to recover it for a TD!!!!!" Nope. Touch back.