Mom: "Oh, yeah?"
M: "Yeah! He let me use his toothbrush since I couldn't find mine! Wasn't that nice?!?"
Mom: (trying not to laugh)
J (acting all big brother-ish): "Yeah, I did. But just cause we couldn't fine his."
(They both notice me trying not to laugh, decide I'm the crazy one, and walk away)
M (walking away, talking to J): "Well, it was nice of you, you know."
J: "Yeah, I know."