from The Imago Sequence by Laird Barron

Worms crawl inside your guts and make babies. They crawl up your nose, your ears, into your mouth. If somebody grinds you into itty-bitty pieces and a worm eats you, it'll know all the stuff you did." He lowered his voice. "They can crawl up your butt and make ya do the hula dance and jabber like Margie Thatcher on crank!"