I was talking with my friend just the other day, it played out like this:
Me: *thinking aloud* I never noticed that tiny scar before-what's it from?
L: It was from some acne-I scar easily, like, the tissue builds up, and doesn't go down. See here, here's a cut from my hand.
Me: *nods*
L: When I was younger, I had surgery, and they didn't sow up all of it.
Third party: how come?
L: It heals better that way.
Me: -Ooh, where's the hole?
L: *laughing really hard* on my tailbone...
Me: Oh. oh? oh.
.....
*vivid mental image*
*buries face in hands*
L: Haha, you doing okay?
Me: I've told you before I have a vivid imagination.