People be pranking! Especially over text message, where it's fun to text scary stuff to a wrong number and watch how people react. Sure, almost every time that transaction should quickly end with, "You have a wrong number and I don't know who you are, please stop." But no one's going to get praised as being a "masterful" wrong-number prankster by posting something boring and realistic like that on the web. That's why nearly every text message prank on the web is so obviously fake it feels a little sad.