Answer:
What goes up but never comes down?
I describe a toilet cleaner as well as one of Santa's reindeer
If you have me you want to share me. If you share me you don't have me. What am I?
I only exist when you are here. Where you never were I can never be.
You get embarrassed when you stand on me when everybody is watching. Women don't like to talk about the number they see on me. Everyone stands on me when nobody is around
It rows quickly with four oars but never comes out from under his own roof. What is it?