At 17, Justin Cobb (Lou Taylor Pucci) still sucks his thumb. Childhood habit has become adolescent addiction, much to the consternation of Justin's parents, his orthodontist, and of course, Justin himself. Thumbsucker traces Justin's final year of high school and the bizarre series of strategies he uses to kick the habit. In this way, Mike Mills's debut feature is a coming of age flick and also an examination of the slippery concept of addiction.
Justin's thumbsucking is causing him no end of trouble and it seems that everyone has a suggestion. “Call on your power animal,” counsels orthodontist cum new age guru Perry Lyman (a gloriously restrained Keanu Reeves), as he hypnotises Justin during a dental check up. The dramatic fallout from this solution leads to a family consultation at Justin's school, at which Justin is diagnosed with attention deficit hyperactivity disorder (ADHD). Despite his parents' misgivings, Justin starts taking