I ask for the type of beer I want. For example, Yuengling Lager is very popular around these parts. But everyone just calls it lager. So if I want one, I walk in and ask for a lager. (You can tell you've left Central PA if you request a lager and the bartender asks you, "What kind?" or "What brand?")
If the bar has Yuengling on tap and in bottles, I'll be asked which I prefer. If it's on tap, it's typically served in a pint glass at most of the bars I frequent. If I know they have bottles and draft already, I can ask for a lager bottle or a lager draft. Some places offer sizes smaller or larger than a pint. In which case, I'll be asked if I want a girlie size, or if I want a giant glass.
If the bar has Yuengling on tap and in bottles, I'll be asked which I prefer. If it's on tap, it's typically served in a pint glass at most of the bars I frequent. If I know they have bottles and draft already, I can ask for a lager bottle or a lager draft. Some places offer sizes smaller or larger than a pint. In which case, I'll be asked if I want a girlie size, or if I want a giant glass.