What the fuck?? She got so angry about him supposedly bangin his secretary, when she fucked his brother? What a bitch...damn funny though. Bet her husband must've felt like shit after that and how awkward the pranksters must've felt for the husband.
Yeah, it definitely sounds fake. I've heard this prank (or something 99% similar to it) about a thousand times and it never sounds real. If you listen to the flow of her words, it sounds really edited.