Or if your in your car, just stop by the saide and tell her that it seams you tire pressure is kind of low... Get out of the car, pretend to check the tire a bit, let one rip, come back in the car(making sure you walk away all that fart trail that alwais follows you after a fart) and tell her you were right! Hey make you look cool cause you can feel when the slightest thing is wrong with the car, And you can fart without any prob...