Bavarian Fire Drill

A.k.a. sneak into a place by pretending you’re supposed to be there.

(Star Wars: A New Hope) C-3PO avoids getting captured by pretending to be an Imperial droid and “telling” the stormtroopers where the intruders went.

(Shrek 2) Shrek, Donkey, and Puss infiltrate Fairy Godmother’s factory by pretending to be worker’s union representatives.

(Robots) Rodney and Fender sneak into the Bigweld Industries party disguised as “Count Roderick Von Brokenzipper (formerly Count Velcro)” and his assistant.