That is so funny. I've never had my cats waiting on me like that but I've had my parent's cat sit and wait.

I take care of my elderly parents (and their cat, Ms. Kitty). She spends most her day and night sleeping on the swing on their porch and only want to come in to eat and use the litter box. If I'm busy cleaning her box she will put a paw on my leg as if to urge me to hurry up.