They are plotting the evilest long term plan to rule the world.

Their taste and smell nervours ends are there, so they are just savouring their meal.

Clapping to themselves for a job well making edible food, unedible and gross.

As an opposite of humans, they wash their hands AFTER eating.

They've been doing the Gangnam style for ever, and roll their eye parts at humans, who are just doing it now... WHAT?

More than one of the above.

Other.