Do you tip on beer?

originally posted by: Whoisjohngalt
Lets say you go to a bar and order only a single beer, no food, no cocktails. Do you tip?

And I do not drink alcohol at all.

New page so I'll say it again, tipping someone for pouring me a pint at the pub would be as weird as tipping someone at McDonald's for preparing me a happy meal lol
It's a ridiculous US thing which allows employers to exploit their staff.

EDIT
Come on US folk, explain why you tip at pubs but not at McDonald's? Seems odd to me if you are so passionate about tipping people who serve you.
Contradiction much?