A Seemingly Odd Question, Ritual Tools Including Semen Options

(IMG:style_emoticons/default/oops.gif) Greetings

This is rather an odd question (for me to ask anyway). Bit off the beaten track for my threads anyway. But here goes. (IMG:style_emoticons/default/baby.gif) What belief systems, magical methods involve the digestion of male semen? What are the desired effects? What are the psychological effects on a male priest who digests his own semen or another's semen? What are the viewpoints towards this priests sexuality?

I know male semen is an extremely powerful magical tool. A very powerful magical talisman. (IMG:style_emoticons/default/face08.gif)

I'm not about to embark on such a knife edge path. I just need to understand the magic system and tradition behind such a ritual.

Plenty of decent replies here, but to add shortly:

Semen:
Disintegrating
Decelerating
Dissipating
Destructive
Fivergent
Loosening
Rising temperature gradient (heat inducing)
Friction-inducing
Centrifugal force
Explosion
Diffused power is noise

Menstrual blood:
Consolidating
Accelerating
Integrating
Contracting
Convergent
Formative
Lowering temperature gradient (cooling)
Friction-reducing
Centripetal force
Implosion
Diffused power is silence

From a book on VS.

Both forces are at work in most systems, for example in rivers you have the downward flowing gravitic force and the upward flowing levitating force. Most of our technology is based on the 'semen' model, combustion, explosion, heat and pressure inducing - whereas nature uses those forces in predominance in the disintegration and death of things. Both are necessary, don't let the above put you off.