The only boy, who clearly didn't drink his milk when he was (still is) a little boy, becomes a face of milk selling company's adverts. How ironic would that be?
Just imagine Giovinco saying "Drink this milk and you will grow as big as me!". I bet every single kid would throw every bottle of Parmalat's milk they can find into the trash can straight away. "Fuck that shit. I might not become a president in the future, but I'm sure as hell not going to be fucking Giovinco".