(noun) An umliker is a person who cannot speak without using um and like in between most words.
The subject replaces adjectives with um and like and is generally an idiot.

I was like, trying to um, be like, really smart but um, it like, didn't work.

An Umliker can use um or like exclusively, but they are still an umliker, and still an idiot.

When you eat dirt for the first time and leave your family to build a shack in the woods