Heh, well your dreams sound much more fun than mine. The best I can find in the Bible about this topic is that you are unclean by reason of your emission of semen, and so it is prescribed that you should just go and wash your garments and take a shower and then be counted as clean again after the sun goes down, which is pretty lenient. It seems to me to be on the same level as a woman with her period, while it is unclean, because it is natural the prescription is very light, pretty much to just be set apart for a period of time and to wash away the uncleanliness, and then to make a minor sacrifice to the priest. Since we have Christ as our sacrifice and priest, you will not be needing to present two pigeons, so I suppose you should just go wash yourself and wash your clothes then and you should just not worry about this and hope that such dreams will subside in time. It seems to me such things are a cleanliness issue, rather than an issue of the diabolical sort. Hope that helps you in some way and here are the biblical verses which I could find which pertain to this topic.
Leviticus 15-16-17
[SUP]16 [/SUP]And if any man's seed of copulation go out from him, then he shall wash all his flesh in water, and be unclean until the even.
[SUP]17 [/SUP]And every garment, and every skin, whereon is the seed of copulation, shall be washed with water, and be unclean until the even.
Deuteronomy 23:10-11
[SUP]10 [/SUP]If there be among you any man, that is not clean by reason of uncleanness that chanceth him by night, then shall he go abroad out of the camp, he shall not come within the camp:
[SUP]11 [/SUP]But it shall be, when evening cometh on, he shall wash himself with water: and when the sun is down, he shall come into the camp again.