"NSFWAK" Amazing Firefox? Sexy Video WTF or Sexy Video Coolspicyguest

This is a sexy and exciting video advertisement that keeps you guessing about its message until the very end, where it finally reveals its hidden agenda. W T F? So, what exactly is W T F? A quick search on Baidu yields several explanations: 1. WTF stands for World Taekwondo Federation, and also refers to Korean Taekwondo; 2. WTF = what the fuck, a vulgar phrase in English; 3. WTF = What The Five, a cool website for advertising design at www.WhatTheFive.com; 4. WTF = Wonderful The Firefox, praising the Firefox browser. After considering all these possibilities, it seems most likely that this is an advertisement for Firefox. Who else would be so quirky and seemingly random?