Stairs
From Gomerpedia
HAHAHAHAHA! No health care professionals take the stairs?!! Are you kidding? That counts as exercise, and who has time for that?![1] LOLOLOL!!! If anything, they're a place for interns to get lost.[2] Or the dreaded last resort when an elevator never arrives.[3]
Types
In the way that there are two types of escalators - up escalators and down escalators - there are only two types of stairs - the up stairs and the down stairs. Walking down the up stairs or walking up the down stairs is strictly forbidden in most cultures.
Additional Topics
References