Laurie's idea to name the boat Sea Story, and her later saying: "We're in a sea story right now" is a meta reference to the several story lines that comprise each episode. The new couple to move in and the Bobby/Riggs story are the A and B stories, and renaming the boat is the "C" story, so "in a Sea story" is really "in a C story".
This is further supported by Andy saying to Bobby: "You and I find ourselves in a C story more than anyone," and Bobby says, "Nothing of consequence ever happens but dammit we have a good time."
This is further supported by Andy saying to Bobby: "You and I find ourselves in a C story more than anyone," and Bobby says, "Nothing of consequence ever happens but dammit we have a good time."
To spoof the title which no longer matches the content of the series, in the second season the producers started adding self-deprecating jokes to the show's title card. The one for this episode reads: welcome to "Cougar Town" Call your mom, tell her you love her. We're trying to do something positive with these.