I never liked seesaws when I was a kid. Probably because I had brothers who I couldn't always fully trust not to pull some kind of prank. They never seemed to fully consider the consequences either. Bad combo!

Sometimes I wonder if all these signs were suggestions by lawyers trying to cut down on frivolous lawsuits. I can see it now: "No one told me that this flimsy board being held together by some kind of mechanism in the middle only could be dangerous."