OP, he's probably right. But I'll recount a scene during a meditation retreat. I was sitting and guiding my awareness up and down my body. At some point during the sit it became quite shocking and forceful, like a wave of sensations moving up and down internally

This went on for 30 minutes or so. I'm not sure if it was truly pleasant but it was an energetic quality akin to neutrality... until I began feeling nauseous. I wanted to throw up. I was in a large room with probably 120 or so other people. Luckily, I didn't throw up.

Later I told the teacher what happened and he told me it was a lesson on impermanence. That even if something feels good, or bad, what rises shall pass and what passes shall rise.

I think had I begun thinking more sexually explicit thoughts during that sit it would have been much more pleasurable, perhaps even leading to a whole body orgasm.

And I'll say, the first time I masturbated after the retreat was like kaioken x4.