Goodbye kitty

Best way to terrify a house guest! Offer them a warm beverage and give it to them in that cup. As they drink, they discover a cat sitting at the bottom

I read the "goodby kitty" part in zefranks voice from the Sick Mr Teddy video XD

NOOO KITTY!!

The face gets sadder as the pictures go by

I have one like that but instead of a cat it's a ghost!

Soft kitty, warm kitty, little ball of fur
Sorry but you're drowning and there is no cure

I laughed a little too hard at this

I cannot identify what the heck you've got in the mug. Is it some sort of blood tea? Some sort of watery tomato soup? Some sort of frothy bile? I think a ceramic cat in the bottom of my mug would only be one of many worries if I was served this.