Billy should perhaps be wearing a T-Shirt that says 'I didn't do it. Nobody saw me do it. You can't prove a thing" for even though he hates being in trouble, no matter how hard he tries, he can't resist causing mischief and trying to get away with his naughty shenanigans.
Fortunately Billy is a very lovable bear at heart and would never do anything mean for fun. He loves the giggly feeling he gets in his tummy playing with friends, planning adventures and, of course being mischievous.
Billy has a hand *whittled catapult that he hides in his school satchel with a marble. He is wearing a tartan scarf and a pair of hand knitted and felted socks with little leather soles.
*Whittling : the art of carving objects out of raw wood using a knife