Invasion of the LEGO ghouls and monsters

A young boy called Matt brought his chemistry set for the science lesson. He accidently put a LEGO brick in his potion, it created a Lego monster maker smell. Everyone (except matt) got transformed by his potion. Matt didn't get affected because he went to the loo. When he came back into class he saw all of the LEGO-ifyed ghouls and monsters. Matt was about to scream, as he started they went to him to obey him! He felt super happy because they will obey him. When the headmaster came into the classroom, he saw matt resting his legs on the teacher's big desk