Jeff tries to make reservations at a popular restaurant but since the only one available is at the witching hour he claims the reservation is for Nicole Kidman. It isn't very likely that Audrey could pass for her, but what if she put on a wig? You gotta hand it to Jeff - he thinks of everything.
Russell's "wife," Liz, talks him into coming to her sex addiction group, and if there is anyone on Earth for which such a group is made, it is he. Russell naturally sees it a happy hunting ground and gladly goes.
Timmy has never seen or even heard of the Three Stooges and Adam invites him over to watch them. Timmy doesn't understand the point of their humor and suggests they watch The Importance of Being Earnest, to which Adam says that if it isn't Earnest Goes to Camp, he isn't interested. It's really sad what they did to Adam's character. Whereas in the beginning he was meant to be the comedic relief of the group, he gradually morphed into a truly pathetic character, who was so stupid it stopped being funny. While i was never a big fan of the show, I mainly watched it for Patrick Warburton's droll delivery, which was borderline perfect. I wonder how much Oliver Hudson complained about his character's devolution into a simplistic nitwit.
As for the answer to the famous riddle the correct answer might surprise you. This is a purely scientific question, not a philosophical one, as so many seem to believe. If a tree fell in a forest, and no one was there, then there would be NO sound! There would be a shock wave that moved through the air, but unless there is someone there to hear it, then there is no sound, as a sound only exists when someone hears it.