There are plenty of World Cup ads for fast food stuff, but I haven't seen many take advantage of some of the silly things you can play with using soccer rules and game play. So here's a proposed ad for Subway (the sandwich place), using the offsides trap as a concept to criticize other fast food and promote their own, supposedly healthier, sandwiches:
At a fast food restaurant, there are three lines of people waiting to place an order at the counter. All the people at the front of the three lines are wearing soccer jerseys, with the two on the outsides wearing the same team, and the guy in the middle wearing a different team's jersey. Oh, and all the people at the front of the lines are overweight men.
And so, the middle line is called up to the counter to order, but just as the guy steps up to the counter, a referee's whistle is heard, and a referee runs up and holds up an offsides flag, penalizing the guy in the middle line. Then we see an instantly replay of the foul, shot from the side view of the three lines, and we see that at the time the guy was called up to the counter, his fat stomach sticks out past the fat stomachs of the other two lines of customers, so we hear the voices of soccer commentators say he was clearly offsides, caught by the offsides trap, and so he has to go to the back of the line.
Then the announcer says to stop getting fouled by fattening fast food, and come to Subway instead, with low-fat, healthy options to help you stay fit.