Johnny Depp -- Donald Trumps a 'Brat'!!! (VIDEO)

Johnny Depp inarticulately ragged on Donald Trump Saturday, calling him "a brat" and then doing a dead-on imitation of the Prez hopeful.

Depp spoke at Arizona State University about the methods behind his acting, but went off on a Trump tangent.

His imitation -- at the end of the clip -- is pretty hilarious.