We see a group of people standing together somewhere (i.e.: at a concert), and all of a sudden everyone gets a look on their face like they just smelled something awful, and everyone backs away from one person in the middle who is then seen standing alone within a large circle of people. As we're watching this happen, we hear a joke version of Hank Williams's famous song: "Your Cheatin' Heart", but with new lyrics about gas:
Your cheatin' fart, came out of you,
Your cheatin' fart, will tell on you.
Then we see a product shot and hear the announcer tell us Gas-X prevents gas, and we see the person who dealt it earlier take some Gas-X, and then we cut back to a similar scene, where the same thing happens to someone else. Then we hear a clip from the same joke song:
Your cheatin' fart, makes them say: "Ew!",
Your cheatin' fart, will smell on you.
