Calimocho is a Spanish (as in from Spain) drink that is primarily wine and Coca-Cola. Sometimes the bartenders add some grape schnapps to it. To make it you go about half and half with the coke and wine, and then toss in a little of the schnapps.
Although it sounds like it wouldn't be good, it's a surprisingly pleasant drink. If you're looking for just being completely smashed I recommend making a big glass of Calimocho and then doing shots of it. That's guaranteed Glassy-eyed Euphoria.