I'm not, but I would kill for a mint julep. I tried to order one around here, and was told that was a "sissy drink". I then asked the bartender what was in a Mint Julep; he didn't know. He said it just sounded sissy...I just laughed.
Put a splash of water in a very tall glass. To this stir in powered sugar (I use this instead of sugar cubes, as it dissolves more easily) and then put the mint sprigs in the bottom of the glass and bruise them a bit (crush gently).
Fill the glass with shaved ice.
Then fill almost to the brim with a good quality bourbon (you might wind up with more than 4 oz)—one of the few drinks with sugar that still demands good whisky.
Garnish with a sprig or two of mint.
Sip slowly and appreciatively.
Most importantly—stay well away from the mass-produced things pushed at most venues during the Derby.