Only happened to me once with a certain Edinburgh's very own blow job royalty, on a quick oral only punt. She took a call just before the punt started proper and arranged for the next guy to come pretty much 5 minutes after I was due to finish, phone buzzed another couple of times during the punt. Anyway, I opted for a facial, but one jet went a bit stray and I assumed that it landed on the bed. Got myself dressed, she wiped up her face then checked her phone and started to usher me out as the next guy was on his way, she mentioned that he had a beard and that she didn't like kissing him.
Anyway as I was leaving her wrapped in her dressing gown I noticed where the stray spunk had landed, right in her long brown hair. Met the bearded guy one landing down, gave him a nod and then went on my way. Wonder what he thought of her hair product?