Shots and shooters are meant to be drunk very quickly in one gulp. They can measure from 1 ounce up to almost 4 ounces and are served in shot glasses, cordial glasses, shooter glasses, or rocks glasses. The difference between a shot and a shooter is based on the alcohol content. For example, a shot of tequila and a Liquid Cocaine are both pure alcohol, so they are shots. A Purple Hooter and a Red Snapper have a nonalcoholic mix to them, so they are shooters.