I'm getting weird synesthetic visions almost every time I have sex now. I can't really explain it.
Last night, I was having sex with Rowdy, and I was seeing gold vines twining up a green background, forming shapes like an Oriental rug. I was still aware of the room in reality, and of Rowdy of course, but every time I closed my eyes the vines were there. This happens almost every time, with different imagery, always very fixed and abstract. I'll be fucking and I'll have the image of a series of purple hills rushing past, or of examining every facet of a blue gem. It's not really pleasant or unpleasant in itself, it doesn't interfere with my pleasure in sex, and it's not something I feel any voluntary control over. It's just a strange sort of waking dream.
I've always experienced sex as a sort of altered state, as something that took me out of this reality. But it's still odd that it's causing me to literally--and lately, reliably--hallucinate.