Is there a man inside?

Can I get help with this text?

"「中身男でしょ？(笑)」とおっしゃる方は大体面白おかしく仕立て上げたい人かな。「着ぐるみの中身はオッサン」が面白いと思っている人。外と中のギャップがあったほうが面白い感じがするもんね。"

My initial translation is "Is there a man inside"? People who think this are very strange.

Can anyone help?

Yes, and it means "Your/Her way of thinking is very mannish" or something.
"The gap between looks and behavior makes fun, isn't it?"
I can't make out the exact meaning of that text though.

They are talking about "kigurumi" - life-sized, no, human-sized cute character costume worn by a person, at stores, events, etc., right? They are talking about people who find the fact "it's only a guy inside" funny, against those who just look at the cute appearance and enjoy the looks (my guess).

- Someone (who looks at a kigurumi) and says "It's a guy inside, right?" is someone who wants to poke fun at things. Someone who finds "a middle-aged man inside a kigurumi (a cute character)" is funny. I guess some people find a big gap/contrast between the exterior appearance and what's really in it amusing."

Oh, talking about "kigurumi", AK is right.
I'm misread it because of my preconceptions in the first glimpse.
Sorry!(x_x;