It would be really painful, for you.
We actually have a strong bite force which is slightly less than that of a powerful fighting dog. However, we don't have huge canine teeth and jaws built like any animal's. So a shark wouldn't feel a thing.
they have very thick skin so unless you had shark teeth urself... lol
also ppl used to make sand paper out of sharkskin if that tells you anything :)
Sharks often attack each other... and can have fatal bites. A human's best chance to attack/defend against an aggressive shark is to bop it on the nose with a fist.
Would it hurt the shark? Like a bull shark, not Jaws. Just wondering about survival things, for a story I'm writing.