Ffs on a busy train to Cardiff. With dds age 8 and 11. Half way through our journeys a foul mouthed group of hens packing beers and shots, got on our carriage and are next to us. Complete with blow up doll. Are doing a sex quiz and downing shots. Brilliant 
I have dd2 looking distressed. I want to stomp on the fucking blow up doll and shove their shot glasses up their arses. Sorry.
I have been on hen weekends, but I have always been able to reign in the obscenity until we were in the pub/ hotel/ nightclub. Not on a train surrounded by kids and non hen party folks. It is just rude.