What do you call a person who believes they are someone famous?

Delusional?

Jackass

Megan Fox

Reality challenged?

It depends.

Are they actually famous? Then they are fine.
Do they think they are someone else? Delusional.
Do they think they are famous but are not? Then they have “Illusions of grandeur”

Delusions of, um, grandeur.*

They also call these “delusions of grandeur”.

@nxknxk Thanks! Fixed!

My grandmother used the term “Illusions of grandeur”

I thought it was ‘delusions of grandeur’

nevermind

and he was mucho grande at the end

@Dog:
Yep!

@PretentiousArtist
No, Elvis was delusional. Who listened to Elvis?

Jon Gosselin

fake

Poser

Thanks, delusions of grandeur was what I was looking for!

Alternatively, you could say it in French folie de grandeur or widen the scope a little more and call it megalomania

You can call the person “delusional” or “megalomaniacal” but a person (even Elvis) is not “delusions of grandeur.” “Illusions de splendeur” is also a noun and can’t be treated as an adjective, although the French sounds very elegant and worth striving for.

Perez Hilton

I know exactly what you’re talking about! I went to High School with this kid, who was, I admit, pretty funny, but now he thinks he’s famous, just cause he won like 2 Oscars, and he’s best friends with Steven Speilberg, and he got a World War II memorial build in Washington DC. I mean, he’s delusional! He won’t even come to the class reunions!

Believing that you are someone famous (Napoleon, Jesus Christ, Elvis) is being delusional. Thinking that you are that person is the delusion. Delusions of grandeur are not delusions of being someone else. They are delusions of being considerably more magnificent as yourself than you really are.

@Jeruba: MIlo here; I am the only one who is more magnificent than I really am.

If it’s a psych condition, I believe it is narcissism. (But that’s more that they believe they are extremely important on their own merits, not that they believe they are someone else.)

Wanna be’s

Narcissistic.

My mother is narcissistic but not delusional.

A liar

@Milo, the only possible response to that pearl of feline logic is sheer unmitigated mute admiration.

I have always been a pushover for a felicitously phrased paradox.

“Celebrity” if the belief is correct.

someone that is
fauxmos?

Napoleon Bones-a-part.

Do you mean they think they really are Elvis? Cool! Or, are you talking about the ones with a Messiah complex, delusions of grandeur. Not cool.

Ajax