Stewart's Disease
A rare disease that originates mainly in older children or younger to middle aged teenagers, however this disease in some rare occasions can carry on to adulthood or in very seldom cases through the persons entire life. This disease consists of creating unreal scenarios, actions, and invents. A common one in younger patients is pointing out false voice cracks, while not seeming too severe it can get extremely aggravating for other accomplices. This disease is caused mostly during pre-mature childbirth when the cerebral cortex is not fully develop and cannot completely develop differentiation between real and fake.
*Friends talking* "Was that a voice crack!?" "uhm... no." "Yes it was you liar!" "I think you might have Stewart's Disease, you should get that checked out." "OMG you voice cracked!" "It's terminal..."