It's this one, here it is... the Supermodel Meat Song (WTF?) Gorgeous girls in swimsuits + Lyrics: hamburgers x 9, Potato salad x 7, Watermelon, hamburgers x 10, Potato salad x 7, Watermelon, then I got distracted.

Why was Portal such a success? Top quality writers and voice acting. It doesn't matter how much money you spend, without those elements you get tripe like this.