Boomshiggity
Boomshiggity is a word you use to describe something that happens that is, in it's very nature, undescribably awesome.
Person A: "WOW, did you see her jump over the fence to catch that pop fly?"
Person B: "Yea, that was DA BOOMSHIGGITY!"
Person B: "Yea, that was DA BOOMSHIGGITY!"