This sign is clearly phony unless the person is a new-born baby two feet long which would be a silly thing to do with your infant. On second thoughts, perhaps the person in the picture is skydiving from a foot above the water which would be even more peculiar. So it could be a good idea not to dive in there at all (unless you’re looking for an excuse to stay away from work of course). In which case you could say you were standing on one foot and lost your balance.