you are a prankster and Mr. Alveraz was the biology teacher of course you couldn't help but ask him questions like "how are babies made" ect..

but one day he was running a little late so you put eggs at in front of the door before you quickly went back to your seat, the door open but it wasn't Mr. Alveraz who slipped on the eggs it was Mr. Virus, Mr. Alveraz looked shocked he help up Mr. Virus before looking towards the class

Mr. Alveraz: "alright.... WHO DID THAT."