B: Okay, I have to confess something. I've been having sex with your sister.
G: What?! You're my best friend Is this some kind of joke!?
B: No. This is a joke. Knock-Knock.
G: Who's there?
B: Me having sex with your sister.
G: -.-
B: Okay, I have to confess something. I've been having sex with your sister.
G: What?! You're my best friend Is this some kind of joke!?
B: No. This is a joke. Knock-Knock.
G: Who's there?
B: Me having sex with your sister.
G: -.-