I believe that it was the just the USA censoring, because I rewatched just about half those episodes, because when I was watching the Episode where Mordecai goes “You’ve pissed me off.” It was changed to “You’ve ticked me off.” And I was sorta of surprised because thats not what he said the last time.
And the episode “Just Set up the Chairs” when Rigby says “Benson is gonna drop his balls when he sees what we did!” They changed it to “Benson is gonna drop his gumballs…” I believe it is for USA cenosring. If it is for UK, I’ll let you know.
The thing that gets me confused really is that Regular Show is censored more than Adventure Time, maybe its because of the obviousness hints in Regular Show, but it seems people can catch what they say in Adventure Time as well. I’m not really sure, but other than that, yeah. I think its USA.