Clark Gregg performs Britney Spears' 'Toxic' - Lip Sync Battle

Clark Gregg (Phil Coulson of "Marvel's Agents of S.H.I.E.L.D.") takes on his Dubsmash rival, Hayley Atwell (Peggy Carter of "Marvel's
Agent Carter"), with a remake of Britney Spears' "Toxic" music video.