Yeah, I’m sorry, I don’t buy that a man’s penis slurps up copulins from a vagina like a milkshake through a straw. That and I don’t believe they travel up to his brain and make him act differently than he would normally. But that’s just my opinion. 
Also, I’m not sure if any of that were true, I would want my man just lying in there, doing nothing. For stretches at a time. I’ve got a life, ya know? 