It's the domino effect for me.
One cat flips out, all the others do, and it just goes downhill from there.
I so wish I could find the video of my asthmatic cat as a kitten, crouching by an archway as I video'ed a pup of ours rushing to us when we called him.
The pup rushed to us as asked and the kitten did this floating leap into the air, I swear he suspended in mid air during this cartwheel for a full 4-5 seconds, then landed and walked away like "what? What? No one saw me do that."
Curse this stupid google machine that I can't figure out.