"Wait, wait! Lunar Colony? You went to one of the moons?" Or, you know, Xander, if Siebren is from Earth, he probably went to THE moon, since it only has one...

That doesn't seem to register with him for the moment, though at least the nephilim has the grace to not bounce, though he's evidently excited. "What was it like? That had to be so cool!"

Xander at least remembers that they were talking about games, and then shakes his head quickly--not to deny anything, but to attempt a reset, probably. "I don't mind going to look at the game car and see if anything agrees with us. It's fine by me."