Marshall: Um, Amy, this is my friend Barney. Barney, this is Amy.
Amy: Hey, Barney. Nice to meet you.
Barney: Hi. Amy, do you like... magic?
[cut to Marshall and Barney in the apartment the next morning:]
Marshall: I hate you.
Barney: I am so sorry. It's a sickness. I'm the real victim here.
Marshall: Twice! Twice in a row you took my candy! That was my candy!
Barney: I know but tonight...
Marshall: No, forget it. You're such a jackass!
[Barney performs his magic trick and reveals "You're such a jerk!" on his hand"]
Barney: I though you were gonna call me a jerk.