Comment on the YouTube video with the advertisement of the fuel-saving device Fuel Shark:

Excellent Device, I recommend it to everyone! Since I am a greedy person, I bought 4 pieces at once and a grinder for 4 smokers, now I have a saving of 120% and with every 10 liters poured I get 2 liters of net profit, you can open my small fuel tank.
I also ask for advice from those who use this device: noticed that every 50 km the penis grows by 1 cm, how to stop it?