Where do you release when you masterbate?

I use pic related. It’s a glass oven pan about the size of my hand filled with oil. The one in the picture is just started but I usually fill it with enough cum that it looks like a fish tank with all the cummies swimming around.
When I had a girlfriend we would have kinky sex, and I would tie her up she’d drink it. Now that I’m single it’s kind of pointless to keep doing this but old habits die hard.