Delaware Cop Returns With Encore Performance to Taylor Swift's 'Shake It Off'

The 19-year police veteran has said he knows the lyrics because of his daughter.

— -- He's back.

The 19-year police veteran has said he knows the lyrics because of his 10-year-old daughter.

The police department later said the video was staged and done for fun, only taking 15 minutes to shoot.

Swift herself appeared to enjoy the dash-cam video, tweeting: