Let’s get Quizzical! Quizzo, Shake Shack’s weekly action-packed trivia night hits Harvard Square on Thursdays. From 7PM until 9 PM in the Shack’s upstairs loft, teams will enjoy food specials, Shack swag giveaways, and the chance at eternal glory through 6 rounds head-to-head play. The grand prize winner score $25 in Shake Shack gift cards-now that’s a no-brainer.