(Our offices are on the 8th floor of a building. The upper floors are occupied by an art school.)

Student 1: “Oh, wow. The elevators on this side of the building are really small.”

Student 2: “No, they’re not. It’s just their size that makes them look small.”

Me: …

Related:
Captain Obvious Strikes Back
The Return of Captain Obvious
Captain Obvious To The Rescue
Belaboring The Obvious