To Laugh Or Not To Laugh

I'm on my way to class the other morning, and a maintenance man gets in the elevator with me. He looks at me extremely seriously and says, "I'm going to two," after which he looks intently from the "2" button to my hand, as if I should push it for him so that we may continue on with our morning elevator ride. This incident caused me to question the man's level of sincerity, since there are, in fact, only two floors in the building. I don't know where else he expected to go... there really isn't much to contemplate when you reside on the first floor of a building, and you need to go to the one just above it. Nevertheless, after studying his face which, I may add, did NOT flinch or crack so much as a slight smirk, I merely stated, "me, too." and pushed the button.