+1. If I've just ridden to the top of the hill or similar on a warm day and I'm stopping for a well earned pint nothing beats shandy. 50/50, no lager top. The best bit is you're hydrating yourself while drinking, so you don't have to worry about dehydration*.
*this may not be true as lemonade is full of sugar. Oh well.
"Radler" in Germany, named after cyclists. http://en.wikipedia.org/wiki/Shandy#Radler
Gotta love those Germans.
From the same page: "In some parts of Australia, a Girl Shandy is simply a glass of Lemonade, while a Boy Shandy is simply a glass of beer." :)