I see "arse" used on occasion here in the US as a way to make "ass" sound milder. It's like using "darn" instead of "damn", munging the pronunciation. In either

I see "arse" used on occasion here in the US as a way to make "ass" sound milder. It's like using "darn" instead of "damn", munging the pronunciation. In either case, the cultural exchange goes both ways.