I was at a coffee shop with a bunch of cop friends, and we were snarking on everybody. As I was there, with my best friend, for quite some time in our usual booth, at various times different officers would join us and leave. We'd gotten on a roll about male versus female officers as "the better back up" in a pinch. Some of the officers were maligning a new female officer not present, and I came to her defense with the comment that she was surely better at protecting herself on a bad traffic stop than Officer [Scrawny Guy]. He was known as a.... well, he called for a second officer quite a lot, because he annoyed people and they'd get in his face.
Everybody smirked, and a voice from behind and to the side of me said, "I'm [Scrawny Guy]." (Obviously, we were using his surname, not "Scrawny Guy.")
I turned, looked at him, and held up my arm to position my forearm next to his. "But it's true - look at that - MY arm is bigger than yours!"
Everybody rolled with laughter except SG and me.
Within a month, he broke one of his arms on one of those "bad" traffic stops - fighting with a woman.
Of course, that was a long time to wait to have an awkward moment "repaired" - but two or three officers privately reminded me of that day at the coffee shop when I opened my big mouth.