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Lean against a wall and then stand upright, as if you're trying to regain your balance.

You can say something like "No, no, I'm totally fine. I don't think I had enough to drink." Combine this with slurred speech to seem more realistic.

Being loud and socially inappropriate does not necessarily equate to being drunk. However, being accidentally inappropriate can make you look drunk.

A big part of acting drunk is to embody the feelings and emotional outlook of someone who is drunk. Typically when people get really drunk, they try to act sober to fit in. This can be difficult because you'll need to assume the perspective of someone who does not want to appear to be drunk while still convincing people that you are.Look like you're trying to keep your composure but slip up occasionally and act drunk. You can say something silly or outrageous and then tell everyone that you're sorry and you didn't mean to say it. Don't go overboard or overact. This may tip people off.