The Doctors make Billy Bones his very own bum and reveal the power of your gluteus maximus muscle! There is more snot to be fired in Ouchology, meet two more new Ouchers, and get some top tips on how to deal with moving up to big school in Mind Boosters. Meanwhile, the Emergency Department have their hands full when Felix comes in with a cut eye and Asia has an injured foot. Today's British Sign Language signs are for 'farts' and 'bum'!