No, though I get what you mean, I locked eyes with this woman as my ass came off the seat and she death gripped the cart, I think she might legitimately have been momentarily worried about hitting her head on the ceiling and breaking her neck (had a friend be a hostess and she said the training absolutely mentions that)
As soon as they were touching the floor again they moved as fast as they could to their area, locked it down, and strapped in hard, and the captain yelled in Japanese over the intercom for a couple minutes before finally translating in English that we were fine, clearly freaked out
I know planes are safe but that experience at 1am over the pitch black Pacific ocean occasionally flashes back to me when I’m on planes because holy shit what the FUCK happened