Security!

Riddle: A woman is sitting in her hotel room when there is a knock on the door. She opens it to a man whom she has never seen before. The man says, "Sorry, I thought this was my room." He then turns and walks down the hallway to the elevator. The woman walks back into the room and calls security. Why?

Answer: Because you don't knock on the door of your own room.

Source: https://www.riddles.com/6079

A woman is sitting in her hotel room when there is a knock on the door. She opens it to a man whom she has never seen before. The man says, "Sorry, I thought this was my room." He then turns and walks down the hallway to the elevator. The woman walks back into the room and calls security. Why? — Security! by Jazmine v1.

Riddle: A woman is sitting in her hotel room when there is a knock on the door. She opens it to a man whom she has never seen before. The man says, "Sorry, I thought this was my room." He then turns and walks down the hallway to the elevator. The woman walks back into the room and calls security. Why? Answer: Because you don't knock on the door of your own room. — by Jazmine v2.