A person who believes they are "pure as the driven snow".
Someone who thinks they can do no wrong and never have.
Someone who is very
self-important.
Someone who feigns
innocence, even
in the face of facts and evidence against them.
Someone who plays dumb on purpose.
Usually female, but not always.
"
What do you mean you know I stole
your boyfriend? I assure I did no such thing!"
"But I saw you kissing him last night."
"How dare you accuse me of something so horrible! I would NEVER do that. You clearly saw someone else and
thought it was me."
"You were wearing the same shirt you are wearing today. GOD, you're such a Snow White."