Why does the earth revolve around the sun? Why do birds eat up worms from the filthy ground?

Same reason with why hobbo, Allie Bubbles would think it was the most logical thing to go out with a rich stuck up jail bait called in' Bradley William Garfield. 

Thus begins their completely bizzare and helter-skelter life together, dumping trash cans on each other 's head and stealing cheap pop from the local grocery store.