...a well-known character from a movie that cannot be named for legal reasons. But the character's voice changes into a British accent?! The incongruity is what makes that funny. Everyone wanted Jar-Jar to be British.

Exaggeration - Incongruity

As the wounded character crawls near, you recognize the strange pattern of speaking. It sounds oddly Jamacian. From a space alien? It can only be...You recoil in horror...that can only be....