April Fools

Prologue
They say that the Hermes cabin holds a book full of all the worst pranks known to mankind. Pranks so horrible that Zeus forbid everyone--Olympians, mortals, and demigods alike, from ever using them. That is, except on one day. On one day every year, the Hermes cabin unleashes these pranks, pranks so deadly and atrocious that few have been known to survive one without becoming scarred for life. It is a day that all demigods in their right state of mind fear. Why does Zeus allow this? Well, if he didn't, Hermes would throw a tantrum. And believe me, you NEVER want to be around during one of his tantrums.

What's this? You want to know what this day is? Are you sure? Ok, then. Don't say I didn't warn you.

It's a day called April Fools'.