1 If you are determined to go out with your friends without having a beer, but as soon as everyone gets their beer you feel the beerpressure and order (at least) one beer;
2 If you see a good beer on the menu and you immediately feel the urge to drink it, this is a case of beerpressure;
3 If you haven't had a beer for a relatively long period of time (at least for your personal feeling) and you need a cold beer asap, you are experiencing a serious case of beerpressure
peer pressure