Sperm being pumped inside of her at that very moment
I love a man when he is releasing his sperm inside a woman. I especially love to watch (if I can) when a man is filling me. It's just the thought that at that very moment he is putting something very precious inside of me and the total trust I am giving him to allow him to give me his gift. But when it's not me receiving sperm, I like to watch the next best thing. At this very moment I'm watching his penis contracting as his sperm is being released inside of her.