Very random question, but today while I was undressing my LTR, I noticed a "U" shape written on the left-side of her mid section in pen ink. I really didn't know what to make of it and she didnt know either. She just kept giggling because I had almost given her an orgasm by fingering her.

Initially she said it could have been from her clothes, then said she could have drawn on herself by accident. But was giggling the whole time and wanted to continue with the physical stuff. So what do I make of this, and no this is not a troll post.