How do you do THAT?

Coffee makes me feel sick anyway, especially with sugar. I only drink espresso without sugar from a vending machine when I sleep less than five hours, and I need to be in good shape. It works, but only for an hour or two, unfortunately.

Added 7 minutes later

Actually, the best coffee is with whiskey.

I haven't tried it, but the idea seems extremely dubious. Pouring strong alcohol, especially with a distinct malt flavor, into an already sharp and bitter drink... The taste of whiskey will be completely lost, and it will be even harder to drink. I think if you're going to mix coffee with something, it should be with cream liqueur. If you absolutely must use a strong liquor, then cognac or dark rum. As long as your heart can handle it, that's another argument in favor of coffee without alcohol.