What are some small minor things that annoy you in movies ?

When they need a bit of blood for a pact or to prove they are human and they USE THEIR HAND - dude. So many ligaments and tendons in there you could accidentally cut not to mention it hurts super hard and you can just use your fleshy forearm instead and still be able to grab things afterwards with less of an issue. I know it's because it's easier to hide the fake blood and smear but you can just as easily do that on your forearm.