...loves nothing better than chewing on clover!
The way we see it, Sheep Boy has taken a nasty habit from his friends, the "ruminators". He used to look at them as they slowly and patiently chewed grass in the fields, so he didn't even notice the moment when he put a clover leaf in his mouth and started ruminating as well.
But he's not only chewing - he is also thinking about several subjects of great importance. That is why his brain has started to grow and grow - and now he needs to cover his big head under this sheepskin hat.
Attention all you chewing-gum fans! :)