Article in English: It's much easier said than done, but if you can find a way to distract yourself, you are halfway home. Get your mind focused on something important, irreverent, or just plain weird. The idea is that it's hard to actually think and have an erection at the same time. (Women have known this for centuries.)  Think about something really important. If you're older, maybe there's bills to pay, or deadlines to worry about. If you're younger, try thinking about your parents, weight, or grades; it's a guaranteed boner-buster. Think about something irreverent. Irreverent means not taking things seriously. Try picturing something really funny. Think about something weird. The weirder the better. Some people think of cobwebs, or clowns, or maybe even the irreconcilable vastness of the universe. It could do the trick. When you walk, your body is forced to pump blood to your limbs in order to get them moving. That's why taking a nice little stroll could relieve you of your unwanted erection. Try mumbling something to your peers about obscure economic policy and walk away into the distance. The girls will think you're really mysterious. Most people don't walk around with ice cubes or ice packs, so it could be tough to work this one. But cold objects will constrict the blood flow to your Johnson, making it a lot less excited. Or just go to the restroom without offering an excuse; that could be less weird. When you're at the restroom, wash cold water on your face or do jumping jacks if no one else is there. Think about someone you know who may or may not be the least good-looking person in town. Don't rub it against your hand or another object, don't picture someone who is evenly mildly attractive, and don't fixate on your uncomfortable situation. Your discomfort will go away soon if you complete all these steps.

Summary in Vietnamese:
Tự làm mình xao lãng. Đi bộ. Cho gì đó lạnh vào trong quần. Tìm lý do vào phòng vệ sinh. Dù có làm gì thì bạn cũng đừng khiến nó bị kích thích hơn.