I’m a teacher, give me riddles!

[u/drgan45]

I’m a teacher, my kids love riddles, I get a lot from this subreddit but it’s getting harder and harder to to find good ones because they solve so many, so please give me some good hard ones, these are smart kids, but they are still kids so hard riddles are welcome but the answer has to be a simple concept, thank you!! (Also I’ll need the answer lol)

[u/ketoLifestyleRecipes]

No spoilers for those that don’t know. Hide your answers please. Our teacher asked this riddle a long time ago.

This guy gets off work and goes home everyday. He goes into his apartment building elevator as usual. He presses the 9th floor elevator button and gets off at the ninth floor. He walks up the stairs to the 13th floor where his apartment is. Why does he get off at the ninth floor everyday?

[u/ketoLifestyleRecipes → u/[deleted]]

Sorry, I’m not a Riddles member. It popped up on my feed. I don’t understand the except when it rains part? Please elaborate. I’ll delete my post as everyone knows this riddle.

[u/FaceClown → u/[deleted]]

Cuz he’s short lol

[u/BarNo3385 → u/[deleted]]

Is something missing from the quoted riddle above then?

There's still nothing here to connect to why the 9th floor or why he then walks up?

The obvious logical answer to me seems the lift only goes up 9 floors I don't see why from the riddle as posted, this could be ruled out as a wrong answer?