In the now closed thread
Liquid Rosin Flux I said to avoid catastrophic spills at all cost because your entire workbench, all the tools and testgear, and your clothes will be ruined. In particular avoid fumbling while handling the bottle as the resulting movement may be unexpected.
In the video
The Bizarre Behavior of Rotating Bodies a mathematician explains the Dzhanibekov Effect in simple terms, using a needle bottle as an example