The narrator asks the audience to imagine what it would be like to rub something on his body. He imagines that he's about to be touched by someone, and he wants to see if he can make it happen. He wants to know if the touch will make him feel anything, and if it will make his skin crawl. The narrator then imagines what it'll feel like to have the touch of someone else's body, and imagines how he'd feel if he were to have it on his own body.