Tour guide (a current student): "This is where some of the faculty have their offices..."
Alumni: "That used to be the computer lab." "Are any of the teachers I knew still here?" "What's over there now?" "Didn't the mailboxes used to be on this wall and not that one?" *people start wandering off in different directions*
Tour guide: "This is where we have our dorm rooms..."
Alumni: "Oh hey! This was my room! And this was yours!" "I want to go over to the other wing where my room was." "Do the bathrooms look the same too?" *more people wander off*
Tour guide: "Uh, and this here is what my room looks like..."
Alumni: "Wow, the furniture hasn't changed in 15 years and it even still smells the same!"
*half the crowd has disappeared*
Alas poor tour guides. I guess they taught us well to be independent thinkers and explorers.
One of the event organizers: "I'd show you the renovated auditorium but I don't have the key to it."
Alumni: "Oh, well. The door hinges are on the outside, right?"
Event organizer: "... please don't."
Alumni: "We used to disable the door alarms with magnets."
Fellow alumni (who is now an electrician): "I unscrewed the plate on the door for my wing and disconnected the wires."
Ahh... good times.