Beer, hard alcohol, wine, etc
Outside of the obvious judgment impairing qualities, alcohol will thin your blood. It will make you bleed a lot more. Drinking before, the night before, or after a body modification procedure is a very poor idea. Unless you want to bleed more. Alcohol also increases your chances of getting a modification that you will regret.
Since alcohol weakens and dehydrates the body and thins the blood—it is recommended that alcohol not be combined with suspension. Use of alcohol should be avoided for at least 24-72 hours priors to suspending. In fact, many people abstain from alcohol for as long as a week. In general, alcohol dulls and takes away from the experience of suspension.