The story behind the elevators is my strongest childhood memory of DS9 is Odo and Lwaxana stuck in the elevator, and one of my strongest memories from childhood with B5 is G'Kar and Londo stuck in an elevator.  

The ‘joke’(?) has then become 'Why was Little Lady so fucking fixated on elevators?’ and, just as bafflingly, “How has Larger Lady managed to not write constant fic and draw constant art about being stuck in them, given Little Lady’s apparent deep-seated attraction to the setting?”