Chinese scientists claim they've found a "gel-like" substance on the far side of the Moon. Pics at the link, but I confess I can't see what they're talking about in any of them. The patch of orange soil that the Apollo 17 crew found is worth looking at if you've never seen a picture of it.
I just thought about the thread title - I bet there are already a few Chinese restaurants that serve Mun Man Gu. Half an hour later you'll want to hear this joke again BTW.