I don't trust stairs, they're always up to something.
Categories
Explanation
Explain Bear
Listen up, buttercup. This joke is all about wordplay! The joke is that the stairs are "up to something". "Up to something" has two meanings: Stairs literally go "up" and "up to something" means doing something sneaky. It is funny because stairs are not alive and can't do anything sneaky. Is your brain working yet?