Indiana scored just about a minute into their game against Michigan State on a 64-yard run from Tevin Coleman. Coleman did not stick the landing (h/t the omnipresent Bubbaprog for finding this)
The initial joke is that this happened because Indiana is not used to scoring, but quite the opposite. They actually score a lot. The actual reason for Coleman's slip is that Michigan State has not scored a touchdown in many moons, and the grass in their end zone has become overgrown with disuse, making it difficult to run on.
Either that or Spartan Stadium has built an extremely inconvenient Slip-n-Slide.