I figured you'd say that, [he trills, complete with obnoxious laughter. He's tilting his head away from her, laughing and laughing at his own joke, or whatever this is. In reality, he's a bit hurt by his earnest offer being rejected, which is why he's making his laughter so obnoxious.] You're an ingrate, but that's all right. Cos it's all on you! You know what they say about beggars and choosers. Or, do you know? Have they got that saying on Mars?