jingle balls. really?

Those who know me know that I am not a prude.  But THIS commercial?   I mean. .....are you kidding me?  It's Joe Boxer.  There's a line of men in shirts and boxers.   The song is Jingle Bells.   And the um.....music is played by the men shaking their balls which happen to jingle like bells.  I actually can't believe it is on T.V.
I know balls intimately and let's just say. ..I have seen the action but never heard the sound.
If a man falls in the forest and there's no one there to hear do "they"  still make a sound?