The other day, I saw an old client of mine. We did a session up in my temple in the afternoon as the sun poured in. Sanskrit chants played, invoking Krishna and Radha, the divine lovers.
As the session drew to a close, he was lying peacefully on the table. I held his lingam (penis) in my hands without moving, just holding the energy for him. The sun moved around a bit more, and hit the crystals that hang in the window. Suddenly, there was a rainbow on the head of his lingam!
This was such a metaphor for orgasm as a path to enlightenment!