Quote from Ted in The Three Days Rule
Ted: You know what I'm gonna do? I'm gonna call her right now. I'm gonna do that whole, "Remember me? It's been so long". See, it's funny because I just saw her. Barney: Dude, you can't call her. You have to wait 3 days to call a woman. That's the rule. Ted: Barney, that rule is completely played out. Girls know exactly what you're doing. Hey, I got a new rule. It's kind of crazy, but I call it, "you like her, you call her". Barney: I'm sorry. Can you repeat that? I don't speak "I never get laid".