Dirty Little Secret

My daughter has a secret.
It's a nasty secret.
It's a dirty secret.

She picks her nose.

Oh, that's not the secret.
Joe and I are both aware that our daughter spends plenty of time during the day knuckle deep in her nose.

Her secret is where she chooses to dispose of them...

On her bedroom wall.

So which daughter does this?

I'll give you a moment to ponder this question.

Any guesses??

BINGO!