Good points, Jerry.

I think also a lot depends on the intended audience.   There are a lot of "Rugby Songs" and other bar songs that go over really well when your audience is a drunken lot of rowdies but that even THOSE folks wouldn't sing in other settings.

We have a rather lengthy thread here about "Songs About Farting," and I must admit I rather enjoy a lot of those songs.   That said, I've rarely found a setting where I can "share" those songs without fear that at least one person in the group (audience) will be offended.
(Guess I'll have to look up some of my old Rugger pals.) ;-D

Genie