Stanley is a normal teenage boy, struggling with constant erections and erotic fantasies of his crush, shooting hoops and playing cricket with his best friend. His home life isn't so hot, his mom and her boyfriend not really paying any attention to Stan or his little sister, Lily. Stan is responsible for keeping the family together, for making them seem reasonable on the outside.
When Janine, his crush, asks him to a dance, he wonders why on earth she would ask him. His best friend, Matthew, tells him why - Janine is tilted. She's a gwog. She's a lesbian. She's using him. But he goes to the dance anyways, and through a series of awkward conversations, they begin to date.
At the same time, Stan's sister Lily has been in communication with their estranged father, and informs Stan and their mother that dad is coming to visit with his new son Feldon. One more thing for Stan to deal with and make "reasonable."
Tilt is a powerful, humorous insight into the erotic, troubled mind of a high school boy - in one scene, perfectly paired with a cow's eye dissection in science class.