He goes through door 1 and reality changes around him, he is now a busty woman named Bridget.
“What’s happened to me” he asks
You tell him “don’t worry your life is the same you’re still a bus conductor and your friends and family are the same but now you’re a beautiful busty woman called Bridget who does only fans on the side”
“Can I turn back?” They ask
“No change backs I’m afraid, you can either open another door or leave”