From Tim burton

Shock Lock and Barrel, had to go to school Barrel leaded Shock to his Classroom Lock did to, Shock refused and hugged Barrel and Lock's legs, he did not wanna go to Class Even Shock, Lock and Barrel, misbehave alot he only wanted a Classroom with misbehaving Psst, Shock was also short too he did not like tall ones.

Barrel flicked his own hair, and took his own skeleton mask off...

Barrel: "please go in, its that easy."

Barrel knew this was wasting his time Lock took his demon mask off.