If you've got some time to kill and a hankering for hilarity, take a listen to these prank calls. We guarantee they'll get you howling with laughter, without you even needing to harass random strangers. 1. The mysterious religious tome A South African DJ phones up a "Christian Family Bookstore," disturbingly named Cum Books, and enquires after a particular book. The saleswoman, who sounds more than slightly blonde, is unable to offer any assistance based on his rather vague description. Normally this wouldn't be very amusing but, ah… Well, the book is rather well known. People gifted with the intellectual ability to miss the painfully obvious are always amusing. 2. Becky the little Irish girl demands DESTRUCTION! This one's adorable and hilarious at the same time. Becky, a Dublin schoolgirl, phones up her local demolition company with a rather unconventional request. You see, her school is guilty of giving her "extra homework," so something drast