This happened about a few days. I wasn't expecting anything to happen that day but I suddenly got a message from a friend about wanting to play some dnd with a few friends. I've only played about 4 times but I've always wanted to get into the game so I was like "why not". I agreed and we headed over to his friend's place. It was then I realized that his older brother we'll call Bob and a friend of his were also going to play. I didn't think much of it and before long everyone arrived. We started making our characters and jumped into it. I was a half-orc fighter that took an oath of silence as his flaw. His character was going to be based off the mountain from game of thrones. Anyways, the rest of the party consisted of a yuan-ti mage, a human rogue, a bugbear barbarian, a halfling rogue and Bob's Bugbear fighter. The DM was a pretty experienced master but wasn't prepared for what was about to happen. Bob's younger brother brought alcohol into the room and by the time the game started was already like 7 cans in. We began the campaign and our party started in a prison, with our equipment taken from us. The DM told us to introduce ourselves and we were already having a bad time. Bob was talking over the dm to his friend about other things and not being respectful whatsoever. His younger brother didn't help the scenario as he was laughing and being loud as well. It took 20 minutes to get through everybody. Bob's first action as his character was to punch the wall constantly. Not the door but the wall on the other end. He told us that he made his character an idiot so that's what he would do. It was funny at first but he just did the same thing over and over again. The same situation kept on occurring where they would talk over the dm and get off track. Eventually, Me, the dm, and two of my friends started making plans to leave. One of the friends received a call from his GF and used it to his advantage to say that he needed to go and we each followed his example. Let this be a lesson to always make plans ahead of time to avoid situations like this.