Tyler Posey set the Lip Sync Battle stage on fire when he performed the classic '90s anthem "Flagpole Sitta" by Harvey Danger while decked out in a flannel shirt and backwards baseball cap. The Teen Wolf star [1] had some stiff competition from fellow contestant Gigi Hadid, who performed "Larger Than Life" [2] alongside a few members of the Backstreet Boys, but his energetic routine during A-ha's "Take On Me" was certainly enjoyable to watch. Check out both of his performances, and then see what happened when Hayden Panettiere and Eva Longoria faced off [3] earlier this month!