My kids have been singing and practicing "The Cup Song" by Anna Kendrick from the movie Pitch Perfect.

At first I had no clue what they where doing. I've heard the song, but have not seen the video. They pulled up the video and schooled me about the song.

I figured they could teach me how to do it. How hard could it be if a 7 and 9 year old could do it? Let's just say it took me about twenty tries before I got it down and I don't think I had the rhythm right.

Here's Anna Kendrick doing 'Cups' in 'Pitch Perfect'