[He's cried over far less, though to his credit, he just tears up this time, and manages to hold it (mostly) in.]

Maybe I am! Maybe I am just a kid! Maybe I'm not some big stoic, fearless hero that always does stuff right!

But even if I am a kid, I still helped stop a demon apocalypse. And I've protected my teammates and saved some of their lives. And I survived brainwashing that would've probably left most people crazy forever!

And yeah, I'm probably a little too vicious sometimes, but it's only because I hate people that think it's okay to make other people feel afraid and powerless and small.

So maybe I am just a kid, but if you think my teammates are better off without me, you're wrong. I'm going to keep protecting them, and I'm going to keep protecting innocent people, and most of the time I'll even try to keep the bad guys from getting hurt too much. And that'll only be different if the situation is really, really bad.

So -- so -- [His face turns red] Sprock you! And the rocketship you rode in on!

[Generally, he and Mabel avoid cursing, but maybe it's time to start. Maybe it's time to do the teen rebellion thing.]