Context: for some reason Nickelodeon airs football games, and their broadcasts edit in a bunch of over the top graphics to keep kids interested - including the giant slime monster
Here's a longer compilation of their edits on YouTube

FWIW, the Nickelodeon games are a once a year thing starting last season, mostly done since Nick shares a corporate parent with CBS, who has rights to broadcasting NFL games. It's pretty much corporate synergy to get more eyes on the league.