I'm new here, but I feel you guys are giving him a hard time. A lot of people did stupid stuff when they were younger, including bosses and managers, that they could look back at and regret, but why do that? There's no shame in having a good time or doing something out of character at least one time. Most adults know that so they will kind of laugh behind your back, but it won't be them laughing at you, it will be them laughing with you while staying professional as to set the tone.
All I'm saying is, if someone were to not be able to judge you by your present character because they're worried about one incident which isn't that serious (almost everyone has done something like this, depends if you got caught or not), then you should feel fine not working for them. No one wants to work for a tight-ass who isn't even capable of letting loose even once in his/her forsaken life.
Peace and much ♥. Phobic out.