This video has 56 million hits, so most likely you have already seen it. If you haven't, I don't think you're going to thank me for introducing it to you. This tune is simultaneously funny, catchy and irritating and my kids LOVE it! Once I've heard it again, I find myself singing the chorus, and it drives me nutso.
Here's Ylvis and The Fox:
Now you can either thank me or blame me.