>>212005042 (OP)There's three explanations (within the context of the film) firstly, that she's just into that, carnival roles through a small town, and it's a chance for her to fuck some guy that's new because there's a limited supply in the town she lives in and Joe gives off confident, bad boy vibes regardless of his actual ability.
Second, this is all from Joe Dirt's perspective, maybe he sees her as this attractive, but in reality she was just slightly above average.
Thirdly, he's lying.