Sibling love

Leland adores his big sister and wants to do everything that she does.  Aubrey, more often that not, is a kind and loving big sister.  Here's a "not" moment.
A: This is how you blow a whistle.
L: I'd like to try!  Could you bring that just a little closer to me?
A: No.  It is MY whistle.
L: Yeah.  You're so cool with that whistle.  I wanna be like you someday.
A: Yep, I'm cool.  And this idol worship better continue 4-ever!
L: (Undeterred, fawning) Ooh, what's that in your hand?