Sally from The Texas Chainsaw Massacre
First of all, if you ever stop at a gas station that's open, but has no gas, that's really weird. As writers, we've had to work in a lot of gas stations, so believe us. Don't trust the gas station that they will get more gas, someday soon.
We can forgive Sally for this mental slip. What we can't fathom is why, after escaping the evil house of Leatherface and family, she decided to go back unarmed to help her friends. Want to help your friends? Call the police.
Then she decides to go back to ultra-suspicious gas station. Somehow, even after being captured, bound and hit with a hammer by Grandpa, Sally manages to escape. She then flags down the nearest car, not even assuming it could be driven by someone in the murderous family, even though EVERY SINGLE CHARACTER we've seen in the area is from Leatherface blood. When that car picks her up and drives to safety, it was a nasty and unexpected non-twist for us.