Ejaculation and the brain

I’m just curious if anyone has noticed what I am noticing. When I ejaculate, in that exact moment, there is a weird sensation in my head. This sensation is about half the duration of the orgasm, so about one second long. it feels like something is literally being drained from my head in that moment. Immediately, after this, I feel unclear and with slight brain fog - basically more delusion, I think. This brain fog takes about a day to get lifted. So I’m wondering what this is and is it just me or is there’s any mention of any energy related stuff in Buddhism related to it? Thanks for any answers.