There's a neat article about the origin of the Gatorade shower over on mental_floss.
My favourite nugget is the premature Gatorade shower Kentucky coach Guy Morriss received. Here's footage of Morriss getting drenched and then LSU wideout Devery Henderson quickly scoring a miracle touchdown on a tipped Hail Mary play.
If you're going to celebrate an upset win by pouring Gatorade on your coach, just make sure you end up with the W.
