Don Toliver spoiled fans at his sold-out Madison Square Garden show. On Monday, the Houston rapper’s Octane Tour stopped in New York City, where SZA made a special appearance to perform her SOS album cut, “Used,” which features Toliver. The moment also saw SZA give Toliver his flowers: “Listen. I might be your biggest fan. I’m not joking; everything you’ve ever made, you know how I already feel. You’re the greatest— Octane is incredible.” Peso Pluma also surprised the audience by performing an unreleased collaboration with Toliver. The Octane Tour, which is Toliver’s fourth trek and second arena tour, kicked off on May 8 at Rolling Loud in Orlando and is set to wrap on July 5 in Denver. The jaunt is in support of his fifth album, Octane , which debuted atop the Billboard 200, becoming his first album to do so. All five of his album singles charted on the Billboard Hot 100, with “Body” peaking at No. 14, “E85” at No. 15, “ATM” at No. 25, “Tiramisu” at No. 35, and “Tuition” at No. 85.…