You set it up by placing the olive on the bar and the brandy glass nearby. Put two whisky glasses upside down six inches apart from the olive with the straw between the two like a hurdle. The third whisky glass should be placed another 6 inches away from the hurdle but this one should be with the opening facing up.
Now put the brandy glass upside down and over the olive. Hold the base of the brandy glass and start twirling it around as this will create a centrifugal force that will cause the olive to rise and spin around. Keep working on it as you are moving this over to the hurdle. Once it is over the hurdle, stop twirling and then drop the olive in.
The next trick is called the corker. Here, you are trying to get the cork out of a bottle without breaking the glass. For this, you will need a silk scarf, an empty wine bottle and a cork.
You place the cork into the bottle and then grab a scarf by holding it in two diagonally opposite corners. You guide the center of the scarf into the bottle without letting go of the corners. While you are holding the bottle horizontally, you can move the cork onto the side of the scarf loop that is formed and be able to pull out the cork without breaking the bottle.
There are other magic tricks you can do. You should just work on them so that with a little practice, you get the admiration of the audience rather than embarrassing yourself. So do some research and have some fun. After all, drinking alcohol is just one of the things you can do at a bar.