"Red Solo Cup" is a song written by Brett Warren, Brad Warren, Brett Beavers, and Jim Beavers and recorded by American country music singer Toby Keith. The song was released on October 10, 2011[1] as the second single from Keith’s 2011 album Clancy's Tavern.[2][3] This is the only song on the album that Keith did not write or co-write. The song was featured in the Glee episode "Hold On to Sixteen". Insider ranked it as the second worst song of the 2010s decade[4] and Keith himself called it "the stupidest song [he] ever heard in [his] life." A remixed version by Johnny Mac appears on the deluxe edition of Keith's sixteenth studio album Hope on the Rocks, released the following year. It was Keith's biggest and final crossover hit before his death in 2024.