There are devices that have been on the market for at least as long as ecigs that are designed specifically for vaporizing alcohol to get a buz. They hold about 1/2 a shot, I believe. You don't need a full ounce of alcohol to get a buzz if it is being absorbed by your lungs and getting into your blood stream quickly. I've never used one of these devices, and I'm not endorsing them. I used to remember what they were called, but I forgot.