Pet peeve about someone putting a bag over your head

Why do these victims not immediately punch their finger through the bag where their mouth is?!?!?! Especially a flimsy grocery bag.

I was sorta glad to see Mindy get her due by being so stupid and loud in the woods and THEN going into some ominous looking trailer. She got what was coming to her deservedly. Plus she was a terrible judge of character that she couldn't see how unhinged Alec was. She had no survival instinct, and reminded me of that high school grad who jumped into shark infested waters recently. Sometimes people are just too stupid to live very long.