Me (to Petunia): Come here, sweetie.
Pumpkin: No, she's not sweetie! I'm sweetie!
Me (to Pumpkin): You're right, sweetie. So what should I call her?
Pumpkin: She's Pumpkin!
Me: But you're my little Pumpkin. She's my Petunia!
Pumpkin: No, she's not a Petunia.
Me: What is she, then?
Pumpkin: Yes. Corn.
And really, what could I say to that?