Barney: There's no way she's above the line on the hot-crazy scale.
Ted: She's not even on the hot-crazy scale. She's just hot.
Robin: Wait, hot-crazy scale?
Barney: Let me illustrate. A girl is allowed to be crazy, as long as she is equally hot. Thus, if she's this crazy, she has to be this hot. If she's this crazy, she has to be this hot. You want the girl to be above this line, also known as the Vicky Mendoza diagonal. This girl I dated, she played jump rope with that line. She'd shave her head, then lose ten pounds. She'd stab me with a fork, then get a boob job. I should give her a call.

Marshall: Barney, they're hot.
Barney: Oh, there is so much to teach you all. You have just become victims of... The Cheerleader Effect. Glad you asked. The Cheerleader Effect is when a group of women seems hot, but only, as a group. Just like with cheerleaders. They seem hot, but take each one of them individually? Sled dogs.
Ted: That's insane.
Barney: Take a good, hard look at each one of those girls. Individually.
Marshall: I don't know. The one on the end is kind of cute.
Lily: Yeah, she really is.
Barney: Also known as the Bridesmaid Paradox, Sorority Girl Syndrome, and for a brief window in the mid-'90s, the Spice Girls Conspiracy. Scary Spice indeed.

Ted: Barney, the three days rule is insane. I mean, who even came up with that?
Barney: Jesus.
Marshall: Barney, don't do this. Not with Jesus.
Barney: Seriously. Jesus started the whole wait 3 days thing. He waited 3 days to come back to life. It was perfect. If he have only waited one day, a lot of people wouldn't have even heard that he died. They'd be all, "Jesus, what up?" And Jesus would probably be, like, "What up? I died yesterday". And then they'd be all, "Uh, you look pretty alive to me, dude". And then he would have to explain how he was resurrected and how it was a miracle. And then, the dude would be, like, "Okay, whatever you say, bro".
Robin: Wow, ancient dialogue sounds so stilted now.
Barney: And he's not going to come back on a Saturday. Everybody's busy doing chores. Working the loom, trimming their beards. No. He waits the exact right number of days... Three.
Ted: OK, I promise, I'll wait three days. Just please stop talking.
Barney: Plus, it's Sunday, so everyone's in church already. They're all in there, "Oh, no, Jesus is dead". Then, bam! He bursts through the back door, runs up the aisle. Everyone's totally psyched. And, FYI, that's when he invented the high-five. Three days, Ted. We wait three days to call a woman because that's how long Jesus wants us to wait. True story.