I was the Dominant on this occasion and I was in the middle of fireplay with my sub. I had put some 70% isopropanol on his back and lit him up with the letter X. It looked so beautiful that I stared at it admiring the X I'd made like about 2 seconds too long. There was an audience and I wanted them to admire it as well. Okay, I can't believe I did that. Talk about screwing up.
He was not hurt but it did freak him out a bit and not to mention me. I think I went into Dom space or something. I stopped play immediately and put vinegar on his mild burn and he did not suffer any pain about it thereafter but was red for a while. We went on with a different type of play and he forgave me saying it was just a tad too long for him.
It was not only scary but a major oops on my part. Next time I will do it and put it out right away!