Every now and then I just have to pull some gems out of the hat from Cato "the Cat" Butler. For the younger guys/gals, he used to call the Griz/Bobcat bball games on radio and sometimes did the high school state games too. He was out of Helena, I believe, and quite a character. Included in his bio was an unsuccessful run for governor. Anyhow, here's a couple that I remember from a lot of years ago, mind you, my memory probably has them slightly wrong by now.
"ping pang, walla walla bing bang, for two."
"He broke the bottom right out of the bucket."
And when the game was to the point mentioned above (for example Weber down by 15 with a minute left) my favorite of all -- "that's all there is, there isn't any more; the cat's in the bag and the bag's in the river"