‘The joy of having cats is when you have a milkshake and leave it unattended while putting dishes in the sink then upon turning around you find the cat with its face in the cup.’
This happens when the beverage is not placed out of reach. While the cat is licking at the foam it cannot be chased off for fear of knocking over the delicious drink. Yelling at them results in a momentary ceasing only to have the flicking tongue plunge back into the milkshake as they ignore you.
Then the problem is whether to chuck out the drink or enforce the ‘five second rule’?