So, no reply on the door yet? Okay. First I look for a door. If I find a door, I open it, leave the building, look around for my house. If I am unable to find my house, I beg for change, use a payphone, and call the police. If there is no door, I look for trapdoor and repeat. If the room has no orifice, I wait until I am unbearably hungry, at which point I push the button, either to suicide or find out what the hell is going on. So, yeah. I'd push the button, eventually. Although, as Unforgotten Realms has taught me, not pushing buttons is a very valuable skill, and can sometimes make doors appear!