dupe stairs

noun - a set of stairs toward located in a part of the house that makes it easier for someone to escape

Person A: what are you doing tonight?
Person B: I think I'm just gonna chill in my room

10 minutes later...

Person A: he's not in his room and his scooter is gone! We've been duped!
Person C: how did he leave without us knowing?
Person A: he must have used the dupe stairs!