The big fat guy standing in front of the doorway of stripclubs and keeps everyone out if they are not on the "list". This "list" is basically what the bouncer assumes who you are, if your a hobo, hes not letting you in. He doesn't want any trouble, but if you hit him, he has every right to
pummel you to mush.
They also guard doorways to celebrity parties. In those
rich guy parties,
bouncers are controlled by a wienie-boy butler who talks in a squeaky voice, but commands all the power as long as the big guys are getting paid. These types of rich guy bouncers are less round and more built, and can easily throw you out of a
bulletproof window, but can't overturn cars.