"overrated" = stupid cheer. You want to beat good teams. If they are ranked in the top 10, then you beat a top 10 team, not an overrated one.
"nah nah nah goodbye" = tired and high schoolish, unless you put a new and interesting spin on it
"[deleted]" = uncreative, crude, and overused. Find a different way to disagree with a call. I always liked "I'm blind. I'm deaf. I wanna be a ref." But no one ever joins in when I yell it.
I like "Eat a salad", or "Please don't eat me" also works.
I've been dying for someone to chant "Sideshow Bob" at someone with an appropriate hairstyle. This isn't quite it, but someone can hopefully come up with something good for him anyway.

Hair can be fertile soil for chants -- "You shot the sheriff" for someone with long dreads, "sonic the hedgehog" is a popular hairstyle, "kid n play" ... but the pictures on the UCF roster don't show anyone sporting these looks.
Some other possible opportunities for creativity on Saturday: they have a guy named Adonys (who is not actually a god and his momma don't spell too good) and a guy named Myles Davis (who probably does not play trumpet)/