That really....
On a flight home recently and the family in front were so loud and obnoxious. Not just happy laughter and looking forward to their trip but rude, swearing, talking about other people on the flight. Mob like behaviour. The teenage boy kept belching really loudly as they thought it was funny. Every sentence the mother spoke has a swear word in. And she was going on about shagging someone 
I could hear them bitching about my 3 year old and if they said anything I would have said something back but didn't initiate anything as the mum looked like she was spoiling for a fight.
In hindsight I don't know what else I could have done. But for the few hours in the flight it was awful. And no where to escape. I hated it! I really wanted to tell them to shut the F up!
What would you have done in this situation?