Review:
After I got over the idea I might have been sticking my penis next to Spongebob Squarepants, I started to enjoy it. It did need some lubrication for it to go smoothly, though this is fixed really fast with a bit of spit. As the video says, it is tight. A nice variation tip: make the sponges wet for extra feeling.
It is also really easy to clean, you can just make it again, so you can dump your sperm wherever, and the cup does not get dirty! Had a nice drink afterwards, as the sponges cleaned the cup.