I’ve seen and heard this word misused this way many times. You gave me no reason to believe you were any smarter than the others who did so.
I’ve heard it misused as well.
I am smarter than the others, however. Trust me on this.
:)
You've actually seen someone call someone else an oxymoron?
I have seen Bugs Bunny call someone (probably Daffy Duck) a "maroon" with my own eyes, but I'm skeptical that real people would seriously misuse "oxymoron" that way.
The court demands evidence for your claim that this is a common misusage.