A crowd of hungry nematodes arrive in Bikini Bottom in the middle of the night. They plow through a variety of items, even destroying a boat with the driver still in it. They then make their way to SpongeBob's house. They pull out straws and eat/drink his house. Meanwhile, SpongeBob and Gary are inside, sleeping, as everything starts to shrink. SpongeBob and Gary run outside the house, now reduced to nothing, and see what the nematodes have done.
The next day, after attempting to build a replacement pineapple and failed attempts at sleeping with Squidward and Patrick, SpongeBob finds a small pebble (the only thing left when the nematodes ate/drank his house), and buries it where his house used to be. However, the pebble's actually a seed, and water causes his house to grow back. The house is placed back where it was, crushing Squidward, who was dancing on the remains of SpongeBob's house with joy.
I can turn into a skyscraper!
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This is also the first time the word "nematodes" is used in a SpongeBob SquarePants episode. This word will be mentioned again in Opposite Day and Sailor Mouth.
It is shown that Patrick has a hole in his home under the rock in the beginning of the episode, as well as future episodes do, but when SpongeBob spends the night, it is shown that under the rock is just leveled ground and Patrick uses the rock as a blanket.
This is the first episode where SpongeBob's house is damaged. The second episode is Home Sweet Rubble.
Coincidentally, the title and general plot of these two episodes are similar; in both episodes, SpongeBob's house is destroyed, someone tries to rebuild it, and then the house comes back good as new.
Since Patrick had that much saliva in his mouth, he should have either choked on it or swallowed some of it.
When SpongeBob wears his cap, it's the cap that he wears when Steven drew him as SpongeBoy.
Patrick's fear of spiders is very irrational since spiders both don't live underwater, nor can they even survive underwater.
This is the first episode to use a pun or a parody as the title.
It is unknown why Patrick beat SpongeBob up with his rock, or why he believed he was a spider, since spiders can't live underwater. It may be due to his unusual level of stupidity and ignorance.
This episode's name is a pun on the catchphrase "Home Sweet Home".
In every other episode except this, Patrick's house is very suitable to live in, there's a bed with a pillow and blanket, a chair, and is actually wider than Patrick's rock below it. Here, SpongeBob and Patrick are struggling to use Patrick's rock as a blanket. Even in the beginning of the episode you could see the hole and chair below Patrick's rock when Patrick said, "Is it time already to ruin Squid's day?"
When SpongeBob and Patrick are fighting over who has the rock Gary (who is on the top of the rock) disappears.
When Squidward gets ready, he throws a sock and a pair of underwear, ironically, he doesn't wear either of them.
Near the end of the episode, SpongeBob wears his hat when he's going to plant the seed. Yet, when he actually plants the seed, you see his face in close-up, but without the hat. After planting it, the hat reappears.
It is unknown how SpongeBob can say "Oh No!" over Squidward's phone when the line went dead.
When Squidward is saying goodbye to SpongeBob, he is taller than usual.
When SpongeBob's parents arrive at his home, his father says there's dinner waiting, but during this time it's only morning (as Squidward just woke from his sleep). There are three possible outcomes on why he said there was dinner waiting:
SpongeBob parents' house is located so far away that when they reach it, it's already night there so at the time they arrive they'll immediately have dinner. Also, towards the end of this episode, SpongeBob said goodbye to Bikini Bottom, which indicates that his parents do not live there.
SpongeBob's father could be referring to lunch as dinner.
When SpongeBob waits for his parents, he carries his luggage yet his house was still gone.
When Patrick attacks SpongeBob with his rock, Gary disappears, and does not reappear until he and SpongeBob are kicked out of Squidward's house. This could be a plot hole.
When SpongeBob sits up on his bed, the back disappears.
Before Squidward returned to bed after giving SpongeBob a glass of water before he returned, the pillow was squared, only to fit for one person, but when Squidward goes to bed with SpongeBob, the pillow gets wide enough for two people.
Just before the seed begins to take root underground, Squidward laughs, "He's leaving!" Captions say, "Yeah, baby!"