A person, situation, or thing that could be considered ridiculous, preposterous, or stupid. Something completely idiotic. Inane.
People waiting in line for black Friday sales are ridonkey. Don't they realize they can get similar or better deals online?
Creationism is still taught in some schools. Isn't that ridonkey?
Someone who is both ridiculous and acts like a donkey.
He acted like such a ridonkey!