What the fuck is that?! It looks like a worm monster or something

I know what docking is. And in all honesty, I am cut, so I have never been able to ‘dock’ someone. I don’t know if that’s the right way to say it. I have had a guy attempt to dock me, but the guy was hard as a rock, so he was limited. These images below looks different. I know the guy must have used a pump to get his dick like that, but seriously, what the fuck? Does that go down and revert back to a normal sized dick? I do not mean to be offensive if this is something that people enjoy, but damn. I’d be afraid to put my dick in there thinking that it was going to be eaten. It reminds me of those worm monsters from the King Kong movie.

Docking 1

Docking 2

Docking 3

Docking 4