(Hey, that day will come! Maybe. He's easily excitable, okay.)

"Uh... most of it is me."

Which is true. He's a growing boy, and he's never been told to watch his figure, which he thinks is dumb of people to do anyway unless someone wants to watch their figure, so he always scarfs down whatever is in his vicinity. The way he sees it, he won't always have this metabolism, so he should really take advantage of it while he can.

"But I was also wondering if maybe you wanted to see the movie... to?" Wait. "With me."

Nailed it.