[Barney arrives late to Stuart's intervention:]
Barney: Hey, hey! There's the birthday boy. Time to let the party monster out of its cage, Stewie! Come on, buddy. People don't want to see Bruce Banner, dude. They want to see the hulk. [chanting] Hulk, hulk, hulk... what? [Robin whispers in Barney's ears] Oh. That's what I get for skimming the e-vite.