If I see someone fall I'm immediatly in shock and concerned for their welfare, safety, injuries (even sprains).
IF all is well, I'm relieved.
If I know them. I'm really relieved.
If I'm good friends with them (GOOD FRIENDS) then as soon as I know they are ok ... they get the jokes ...
A stranger? I always hope they are fine because I never know the full outcome of their fall ..nor the reason that they might have fallen (do they have an invisible disease like me? or did they just trip?)
I fall frequently ...and in many situations. My poor former pastor had to finally realize he was going to have to learn to stop having heart attacks with each of my falls ... and since i made jokes of them, so could he. He at least breathed when I fell and stopped panicking and laughed at the other's jokes ...