http://www.goodnewsnetwork.org/caught-dashcam-cops-hilarious-lip-sync-shake-off/ 

Been caught by me neighbor once on way home. She mentioned it a few days later, lol. 

ok, that's the best thing I've seen in a while. Thanks for sharing 867 

That's hilarious!! They just showed this on the news just now!

He's got GAME!! 

OMG! He's so funny!! Maybe he missed his calling! 

Heh, heh, heh. I saw it on the news, too. They said he is the "Class Clown" Go figure. ha.

Funny thing, I was watching this early this afternoon. DH could hear me laughing and was thinking it was odd that I was laughing when he was laughing while watching something else. Turns out we watched this video at the same exact time in different rooms. I guess that's what happens when you're married too long. 

I love how he stops when he thinks someone might see, and waves to passersby then picks right back up. 

This needs to be bumped. Hysterical. And very good advice from Miss Swift! 

You do wonder if they see these things, he is just sooo good at it! lol 

Totally staged........
He's too stiff while signing, no air drumming........
Bogus attempt to humanize...... 

Totally staged........
He's too stiff while signing, no air drumming........
Bogus attempt to humanize......

Seems you are correct:

"The video was staged, said Mark Hoffman, spokesman for Dover Police Department. "This was done in fun," he added. Hoffman said the production took about 15 minutes to tape."

Still funny. 

Makes sense since he knows the cam is there. I wanted to believe he forgot. It is still funny!