freaking cats
you get one
preferably without hair because you don't like cats or hair
you think you know everything about them
you think they are self-propelling source of joy and don't need much attention
soon you realise you have no clue about them
you catify your whole house
you constantly keep learning about them
you end up with three more with hair (black and white so they show on everything you wear)
and you love them more everyday