"Skull Session" dives into a variety of topics, ranging from current events to personal anecdotes. Hosts Mike Hussey and Rich Tierney discuss the implications of gun control laws, referencing Australia's policies and comparing them to the United States. They also touch on lighter subjects, such as holiday plans, the challenges of Christmas shopping, and the quirks of pet ownership. The episode wraps up with a festive note, wishing listeners a Merry Christmas and a Happy New Year.