I've had one with a female character(I don't recall which) giving me a blowjob in a Japanese-styled house. Then, before I finished, she opened one of the sliding doors, and a lot of people were standing there, people I know, looking at me totally exposed, then I woke up with a really bad feeling(No, it didn't turn out to be a wet dream).
I've probably had more, but I can't remember them very well..