Clark Gregg embraces his inner sexy flight attendant and channels Britney Spears with his performance of her 2003 hit “Toxic” on this week’s episode of Lip Sync Battle. The actor — known for playing Phil Coulson in The Avengers and Marvel’s Agents of S.H.I.E.L.D. — will take the Lip Sync stage Thursday, as he re-enacts the singer’s iconic music video. From the looks of it, he doesn’t disappoint the crowd, as he becomes Spears in a futuristic blue flight attendant uniform. He even adds in a dance routine of hip shakes and shoulder shimmies