Just saw a content dispute on the answer https://workplace.stackexchange.com/a/112686/88 to the question "Member of the board asks for admin access and wants non-compliant device on the network".
There has been back and forth edit warring changing the original phrase "cover your ass" to "cover your behind".
In my opinion, this changes a common English idiom which is widely used in workplace situations, to a strange and tortured phrasing which I cannot imagine anyone actually ever saying in real life.
Furthermore, a quick Google for that phrase on Workplace StackExchange reveal frequent usage with no apparent offence ever being taken in the past.
I know the Meta ruling on "Are expletives (cursing, swear words or vulgar language) allowed on SE sites?" is "no, they are not", but would any reasonable person ever define "cover your ass" as an expletive, curse, swear word or vulgar language?