If you're an American and find yourself traveling abroad and meet a Czech, the conversation will almost always lead to Budweisser, and they will proudly explain that the real one comes from the Czech Republic.
I had a Czech dude buy me one because this particular German bar we were at had it in stock. I couldn't taste the difference.
All pilsners are trash and taste like water, regardless of what country they're from. I'm an IPA man.
If you can't tell the difference between Czech pilsner and American lager, you have no taste buds. I'm not saying all Czech pilsners are good, but American Bud and Czech Budweiser taste nothing alike. And either one will do the job for refreshment on a hot day, although I'd prefer the latter.