Nothing can hide this title about what is about to happen in this film. A group of mid 30’s guys is out for Las Vegas to celebrate a bachelor party for one of them, getting married soon. Obviously, what happens in Vegas stays in Vegas, and this guys will go through a tour of crazy deeds during a night they cannot remember a thing about., why? because one of them got the other drugged with some substance that causes amnesia, by mistake. During the night some cary things will happen, from stealing a tiger and place it into their hotel room till gettign married with a stripper,all and all many stereotypes like any movie trying to hit the jackpot selling tickets. But the result is a mediocre comedy that has just some half funny guy in it, that by the way I couldn’t stand 10 minutes watching him as a stand up comedian, that some object he is: Zach Galifianakis.