Kevin

1. A "Kevin" is an individual who is never wrong. If a"Kevin" is found to be mistaken about a piece of evidence, the evidence supporting this person's wrongness will found to be completely incorrect and fabricated.

2. Asshole.

Stupid person:

"You're using that word wrong. That's not the way Merriam-Webster defines that word."
Kevin:
"No, it's okay. I am never wrong. Call up Merriam-Webster, and tell them to change that shit."
Stupid person:
"You're an asshole."
Kevin:
"I know."