Okay, they didn’t exactly plagiarize it. But their “Testosterone TV” commercials seem to be “highly inspired” by the popular Powerthirst internet videos.
For reference, here are the Powerthirst videos (maybe SFW):
First video: http://www.youtube.com/watch?v=qRuNxHqwazs
Second video: http://www.youtube.com/watch?v=t-3qncy5Qfk
I can’t find a link to the “Testosterone TV” commercial, but if you’ve been watching the Tour you’ve probably seen the commercial at least 58 times.