Since most of Will's friends have kids, they're all bailing on boys' night out. Thus, Will shows up at Andy's an hour early so that he can't flake. Andy takes the opportunity to ask Will to be godfather to baby Jason. Knowing Will's penchant for shirking responsibility, Andy's wife, Laurie, is not at all on board with the idea, and for that matter, neither is Will. All he wants to do is go bowling. Five minutes into the drive to the bowling alley, Andy's phone rings. He has to go home to because his daughter, Madison, has to poop, and she'll only do it with him standing next to her. Will refuses to stop the car, so Andy hops out at a red light and runs home. Returning home, Will calls his entire phone list. No one will commit, so he asks Fiona if he can take Marcus bowling.
Marcus couldn't be more psyched, but he's not much of a bowler. After his daughter poops, Andy goes to Will's place and knocks on his door. Fiona pops her head out, and within seconds she and Andy are bonding over wine and parental poop stories. Fiona's stunned to learn Will doesn't know the name of Andy's kids and rejected his request to be a godfather. By the time Will and Marcus return home, Andy and Fiona are painting their toenails. Annoyed with Will, Andy bails once again, further convincing Will that Andy is a lame friend. Of course, it falls to Fiona to explain what's really happening in Andy's life, and how stressful his role as paterfamilias really is.
Trying his hardest to be respectable, Will politely offers to take up the mantle of godfatherdom, but Laurie insists the offer has been rescinded. When she lays into Will, he in turn outs Andy for drinking two bottles of Shiraz while painting his toenails with Fiona. Afterwards, the guys level with each other. Everything would have been okay if Will could have waited an hour for Andy to go bowling; Will thinks Andy never has time for him anymore. Will's stunned to realize he doesn't know Andy's kids' names. While he may be Andy's best friend, he's not a good friend. Will complains about the whole mess to Marcus, who refuses to play any more foosball until Will works things out with Andy. Once again, Will approaches Andy and Laurie, offering to prove his friendship by babysitting - and learning the kids names! Laurie refuses to leave the house, so Will agrees to watch the kids while the couple catches up on Homeland in their bedroom. Will's ready to run upstairs when Madison announces she needs her dad to poop, then has a change of heart. Andy and Laurie walk into the bathroom just as Madison is completing her business and telling Will she loves him for helping. The godfather is back in business!
While Andy and Fiona bond over parenthood, Will turns to Marcus for a boys' night out.