From Wiki, in regards to entrapment:

"However, when a person is predisposed to commit a crime, offering opportunities to commit the crime is not entrapment, a widely held misconception similar to the idea that police officers must answer questions truthfully if they are asked the same question three times, or that they must say "yes" if asked if they are a police officer."

Key words: "widely held misconception". Yes, lots of people believe that stuff. No, it's not true. Use movies as your reference in legal matters at your own peril.