I agree with every review before me on that Cal is an amazing story and you should definitely read it.
It revolves around Cal, this young, rough-around-the-edges, car thief who gets rescued by Davey - an older, more settled man. Afterwards he wanderes around London looking for him, which he does. After that the story -which is narrated by Cal- centeres on their relationship and how they'll integrate their lives.
A well written, quirky, fun, and lovable story filled with swear words. I'll definitely reread some day.