Patience

I went over to see one of my other humans earlier.

I got to their front door and sat down.

I meowed.
I meowed more loudly.
I meowed and scratched at their door.
No-one came to let me in.

I decided to sit and stare at the door.

Eventually, a human opened it and said 'oh, what are you doing here?'

I walked through the door, straight past him. 
I headed for the the food room, found the tall white thing, and sat in front of it - waiting for food.