We get an example of sitting in the 'shame shorts'. LOL!
The clip seems to validate the rumor that Namor spoilers:end of spoilers Also it appears it WAS Namor they were talking about when Shuri and Ramonda said, "he's covered in vibranium!" spoilers:
is actually very old. Like Spanish Conquest old. end of spoilers
From what Jimmy Kimmel said, it must have something something to do with Namor's first appearance, which appears to be in Wakanda. I think it may go back to the idea that he can travel through any body of water. And that big glimmering circle we see Namor in the head dress standing in front of, maybe liquid vibranium. That's my theory, at least.