Quote from Robin in The Window
Robin: Okay, not that I care about this challenge, but it's cheating to wear overalls over a suit. Barney: No, it's not. They're not called over T-shirts, Robin. They're not called over shirtless fat guys who used to come fix my mom's car and then hang out with her upstairs for a little while. No! They're called overalls, okay? And I can wear them over whatever I want. Barney: [to a passing woman] Hey. Robin: Oh, he's not saying hello. He's just telling you what he feeds his horsies. Oh, man, I can sit here and make you-look-like-a-farmer jokes all night. Challenge accepted.