I just remembered one from my own experience. Back in my early 20s, I used to be a regular performer at a local bar’s “open mic” nights. Once of the songs I performed frequently was “Weird Al” Yankovic’s One More Minute:
It was always a crowd-pleaser.
Eventually I started performing at another open mic night at a different bar, which happened to be a “country” bar. I did that song there once. The following week I showed up and the bartender took me aside as soon as I arrived and said there had been some complaints the week before, and he asked me not to do any more “obscene” songs. He didn’t identify the particular song, and I was completely baffled, since I wasn’t in the habit of performing “obscene”, or even “off-color” songs. I had a couple somewhat-off-color songs in my repertoire, but I’d never sung them at this particular bar. In any case, I hadn’t planned on doing that particular song that night anyway; I usually made a list of what I was going to sing beforehand, so that I wasn’t boring the audience with the same songs every time I showed up, and so I didn’t make the connection.
Then, finally, some months later, I was singing the song at … an after-church barbecue at the home of another family from my church (it wasn’t a “church function”, just several families who were friends getting together on a Sunday afternoon after church). I had my guitar, and somebody invited me to sing, and so I just sang some “fun” songs. And so I was singing this song, and I got to the lines:
I guess I might seem kind of bitter
You’ve got me feeling down in the dumps
'Cause I’m stranded all alone at the gas station of love
And I have to use the self-service pumps…
And that’s when it hit me :smack:
Thankfully I had, as I mentioned, performed the song many many times, and part of my performance was being able to maintain a serious, heartbroken facial expression while the audience is roaring with laughter (this is more difficult than you might expect). I was utterly mortified to realize what I had just sung at a bunch of people from my church! But I realized at the same time that if it had taken me so long to “get” that line, even after singing it so many times, chances were that most of my audience wouldn’t immediately get it, and that suddenly stopping would only call attention to it (if for no other reason than the fact I’d have to explain why I stopped), so I called on all my previous performance experience, maintained my straight face, and finished the song. If any of my listeners picked up on that line, none of them mentioned it.