Based, no doubt, on Louise Huebner's album "Seduction Through Witchcraft" (1969), briefly rereleased by Henry Rollins's Infinite Zero records. Seek it out.
You really do have to be careful with sexual witchcraft. Sometimes you finish your spell too soon. Sometimes you can't even get your spell going. Sometimes the woman has a headache.
When you're a four-dimensional being you also have to be careful to not rotate across the W-X plane and accidentally bisecting yourself through 3-space.