Rome-old and Juli-eh (S18, E15-393)

Wasn't the point of the baby was so that Selma wouldn't marry out of loneliness anymore?

Plot Summary
Homer builds a rec room in the basement thanks to a plan he devises where he could declare bankruptcy to avoid paying his debts while protecting his assets.  Unfortunately, the bankruptcy rules have changed without his knowledge, and when he declares bankruptcy, he is forced to get a financial advisor to fix his budget.  Homer is unwilling to remove any of his crazy expenses, but does decide to cut one thing off: the money he's paying to have Grampa stay at the retirement home.  Grampa becomes a quick inconvenience at home.  Homer and Marge decide to go out for dinner one night, and as Marge doesn't trust Grampa to look after the kids, she calls in Selma to look after Grampa.  That night, the two get to talking and, after some wine, decide to have a kiss, which horrifies Homer upon his and Marge's early return.

Homer demands Grampa never kiss Selma again, but Grampa blows him off.  He and Selma have another date, and though Selma presumes its only to anger Homer, Grampa tries to start up an actual relationship with her, under the premise that people like them shouldn't pass over any opportunity.  Selma decides to give it a try and, sure enough, the two get to liking one another.  Patty has enough, and teams up with Homer to attempt to break them up.  Patty disguises herself as Selma, and Homer as some cuckolder, and the two "make out" where Grampa can see.  However, Selma arrives from elsewhere and blows apart their scheme.  Grampa is relieved, and decides right then and there to propose to Selma, who accepts.  Homer doesn't like the idea of having Selma as his new mother.

Grampa and Selma marry, but with Grampa as old as he is, Selma decides to accept a promotion she was offered at work to support the two.  Things are okay at first, but as Selma becomes overwhelmed at work, Grampa's senility kicks in and he unwittingly ruins the kitchen and its various appliances.  The two realize the marriage isn't going to work out and they break up on good terms.

Meanwhile, during all of this, Bart and Lisa learn from Ned Flanders that they can order cardboard boxes for no fee just as long as they do so for a company.  The two abuse this service and use the many boxes they acquire to build a fort.  Soon, the company that provides the boxes gets wise and attempts to retrieve them, sending waves after waves of workers to dismantle the fort in a Lord of the Rings-like manner.  With some unexpected help from Nelson, Bart and Lisa are able to defend their box fort, and the company's workers are forced to flee.  Bart and Lisa celebrate their victory, but quickly become bored of their fort, and decide to water it down to nothing.

Quick Review
Another unremarkable episode for the season, albeit with a wacky plot idea, the likes of which were somewhat reference in jest way back in Season 8.  This story had its moments, but the comedy slowed down even further in the latter half of the episode.  The side story with Bart and Lisa didn't have much going for it at first, and the grand battle of the box fort at the end was hard to sit through as well.

Final Score: 6.3