Calvin says dinner smells like bat barf. Dad sends him to his room. Mom thinks that might be a bit harsh, but Dad holds firm. Dad says Calvin needs to learn manners. He also says Calvin won't starve. Calvin and Hobbes are seen on the telephone ordering extra pepperoni.

Having eaten their Halloween candy, Hobbes says he feels awful. Calvin thinks if someone even mentions "Milk Duds", he'll barf. Calvin laments the passing of another Halloween. He says its always a letdown after a holiday. He decides they might as well go into town to look at the Christmas decorations.

Hobbes is in the tree fort. Calvin tells Hobbes to let him up. Hobbes says he might be some other kid in disguise. Calvin calls Hobbes a hairball barfer. Hobbes says he can stay down on the ground forever. Calvin sees Susie coming and wants to be let up so they can throw things at her. Calvin apologizes for insulting Hobbes. He wants the rope dropped down. Hobbes tells him he has to say the password. Susie comes up behind him as he's on the seventh verse of the poem password. Susie says she was going to ask him to come over and play house, but she thinks he'd be a weird example for their children. Calvin yells up to Hobbes saying one of these days he'll make Hobbes into a rug.

Calvin is sitting on his bed, hugging Dad. He cries that he didn't mean to break the binoculars. He says he's really sorry, and that he felt like barf all afternoon. Dad says he shouldn't have yelled at Calvin like that. He goes on to say it was only a pair of binoculars. That isn't so bad in the great scheme of things. Calvin sniffles "really". Dad tells him that in another ten years, he'll probably be wrecking his car.

Mom groggily looks at the clock. She wonders why kids always feel sick at two in the morning. She sits on the edge of the bed, trying to wake up. She says Calvin probably just ate too much dessert. She says if he's going to get her up at that hour, he'd better really be sick. Mom opens her eyes wide when she hears Calvin barf in his room. She puts her arms out and shouts that she didn't mean it. Dad rolls over and tells her to pipe down, he's trying to sleep.

Calvin tells Hobbes that bugs fly in such crazy loops, he wonders why they don't get dizzy and barf. Hobbes suggests maybe they do. Calvin thinks that's gross, but wonders why they'd keep flying that way. Hobbes suggests maybe they like to barf, and he starts to laugh. Calvin is grossed out, but he laughs. As they walk off, Calvin says it's great to have a friend who appreciates an earnest discussion of ideas.

Bugs are stirring something. They says it's bubbling up. They run, as the mixture is going to blow. Calvin belches at the dinner table. Dad tells him that's enough. Calvin says he can't help it. His stomach microbes can't handle the awful food.

Susie gets a smiley face sticker on her quiz. Calvin is not impressed. Susie asks what Calvin got, but Calvin won't tell. Susie accuses Calvin of receiving a frowny face. Calvin denies it. Later, Calvin sits and thinks that he didn't even know they made barfing face stickers.

Calvin is coloring a picture. He decides his colors aren't enough. He needs to make specific hues. He takes brown, olive green, a little orange and yellow ochre. Then he tops it with lime green, purple, and tan. Hobbes says it's perfect barf. Calvin says you'd think that would be a standard color in a big set like he has.

Spaceman Spiff is stranded on a planet, captured by a horrible yukbarf. The alien says to take Spiff to the dungeon. It looks like a living room. Spiff asks what kind of dungeon this is. He asks if they aren't going to torture him. The alien says yes. He asks Spiff to sit to discuss wholesome principles. Dad tells Calvin life is tough, and suffering builds character. He says virtue is its own reward, and nothing worth having ever comes easy. Calvin yells.

Mom asks if Calvin is slamming doors. He says he didn't hear anything. Inside the closet, Susie is yelling for Calvin to open the door. She calls him a rotten bag of barf. Mom comes in and asks where Susie is. Calvin tells her she may have gone outside. Susie yells to be let out. Calvin acts shocked that Susie is in the closet. Susie tells Mom that Calvin tricked her into the closet and held the door.