Sonic Drive-In is “shaking” things with up by bringing back its very popular late-night offer. The burger chain’s daily half-price Happy Hour on drinks and slushes from 2 p.m. to 4 p.m. does not include shakes. However, if you’re willing to wait a few hours, you can enjoy a late night treat and save a few bucks. For a limited time, every day after 8 p.m., all shakes are 50% off. The sweet choices include vanilla, chocolate, strawberry, caramel, pineapple, hot fudge and fresh banana — each one topped with, of course, whipped cream and a cherry. There’s no limit, so everyone can enjoy a cool treat on a hot night without breaking the bank.