DS (5) was watching Animal Planet today ... (yes, I am one of those terrible mothers that lets her child watch telly )
There was some program about wildebeest in Africa on and he was enthralled.
I heard him chuckle and then really kill himself laughing.
He came into the kitchen and said, "Mummy, guess what .... I just saw something really funny! There was this deer, right, and he was giving another deer a piggy back ... how funny is that, a deer giving a piggy back to his friend???" And off he went chuckling ...