Wake the pledges up in the middle of the night. Claim to have no idea who any of them are. Offer them blankets, tea, ask if they have anyone who should be contacted about where they are. Every time they name a relative or friend, laugh, and beg them to be serious.
After drinking, quiz pledges on frat history/trivia. For each wrong answer, erase one of their childhood memories: the scent of chlorinated pools, a grandparent’s touch. Keep going ’til all they remember is pledging.