Radler is a drink that I believe originated in Bavaria. The story goes like this:
A man owned a Biergarten and it was a popular stop for bicyclists. On one particular, beautiful day there were loads and loads of bicyclists stopping in to refresh themselves and he realized he was running low on beer! So he started mixing it with Limonade (Sprite) and called it “Radler,” the Bavarian word for ‘bicyclist.’
It was so refreshingly popular, it spread from there and refreshes bicyclists and non-bicyclists the world over.
To make Radler:
fill half of a Pils glass with pils and fill the rest of the glass with Sprite. Fertig!
If you want the northern German version (usually called Alster), use orange Fanta instead of Sprite.