fans are some of the whiniest I have ever seen. For the majority of them every loss is due to bad reffing or dirty play or some other type of skullduggery.
It's probably due to several factors, some of which would be familiar to BYU fans from the old WAC days: Small school in a small market that has dominated a relatively weak conference for years. They're not used to losing, so when they do it must be some kind of evil conspiracy.