A sports prank is a very broad term that casts a very wide net. But don't get bogged down with the semantics of a prank, vs. a fad, trend, or even a tradition.
Then again, the ability and desire to argue semantics may be the most unpleasant distinction between humans and animals. It's misery in the making, so try to avoid it.
Back on track.
In some ways those things are different, but fundamentally they are pretty much the same. At least most of the time. They all start out as a single, creative moment in time. If it goes unnoticed, it fades away.
If it goes viral, it's copied, recycled, repurposed, and outright ripped off, until every last bit of humor and entertainment is stripped away. Eventually it's nothing but an empty shell of an outdated relic.
And all that's left is the distant memory of something that was once amusing, but is now giving you an ulcer because of the rage it creates, which boils inside you. Or something slightly less dramatic—but that's not really my specialty.
Here are some sports pranks that are totally played out.