Picking your nose

I'm sure the conversation had started long before I tuned into it...

Girl: GROSS!
Boy: Come on! You know you pick your nose. Triple M, do you pick your nose?
Me: Everybody does. My sister calls it "nose maintenance".
Girl: Maybe with kleenex but never with just my finger!
Boy: But, the kleenex just breaks anyway. You're still picking your nose.
Girl: No it's not! When you use kleenex it's not picking.
Boy: Yes it is. You pick your nose. Everyone does. That's why I keep my pinky fingernail long. It's not for coke. It's for picking my nose.