"As you may know, a standard US pint is 16 oz. Apparently, some bars in US practice “short pouring” their customers by using glasses that are only 14 oz. Since these glasses are the same size as the real ones, though, most customers tend to not notice it. These glasses are usually called “falsies” or “cheater pints.”"
And that Murica is why you're fat.
People in stretch wear shouldn't throw hamburgers, Wide Load.
In UK the pint is 20 OZ but the glasses are actually 22 OZ so you still get a full 20 OZ UK pint and a 2 OZ head
(Just one of the things in America that is not bigger than everywhere else!)