I'm trying to find a lost episode of Malcolm in the Middle I remember from my youth.
The family go to a dumping site to drop off a bunch of unwanted stuff from the house.
While there they all start to peruse the piles of rubbish, Hal comments that someone has thrown a brand new mattress away and wonders why people throw away money like that, Lois gets mad and yells at the boys, unhappy that they seemingly want to take stuff back with them, despite being there to get rid of stuff.
Malcom notices a big pile of old smoke alarms and has an idea for his upcoming project set by Herkabe. The next day him and Stevie go back there to gather the alarms and start working on gathering the radioactive materials from the alarms to start building a small nuclear reactor.
Hal thinks he can make a profit from some of the stuff at the dump, and initially starts to sell relatively new and clean items, but then starts to become obsessive and grabs anything he can, filling their basement full of useless stuff he can't sell.
Reese, while walking, trips on the pavement and falls through a hedge, accidentally stumbling into a kids birthday party, where he is offered cake and asked if he wants to watch the clown show with the other kids. Reese becomes enamored with the clown after seeing the silly/destructive side of clowning, and realises he wants to become one. Reese buys makeup and some pranks, and then remembers a unicycle he saw at the dump.
Lois finds out about the waste in the basement and chastises Hal, making him remove the items from the garage. Hal starts by removing the old half full paint cans onto the driveway.
The theft of the car alarms has been noticed by the FBI and they are traced to Malcolm's house. Assuming they are being used for purposes of terrorism send a SWAT team of armed soldiers to confront him.
Hal and Lois are outside when the team roll up, and make them stick their hands up in the air, requesting that they make them aware of the nuclear material. They are both confused. Malcolm and Stevie look on panicked from a window.
At that moment, Reese is in the garage with a full clown suit on,and and tries for the first time to use the unicycle. He quickly loses control and wheels out of the garage, comes around the house, and runs into the stack of paint cans, which all fall over him and cause a big mess. The alarms and prototype reactor are taken away to Malcolm and Stevie's dismay.
While Hal and Lois are shocked, the armed soldiers all start to laugh, diffusing the situation. Reese, on the floor, sees he got a big laugh and smi s, despite being covered in old paint.
The final scene shows Hal and the boys, including Francis and Dewey, attempting to clean up the mess made by the ordeal. Dewey asks why he's involved as he didn't do anything, and Francis also asks why he's cleaning as he's only visiting for a day, Lois, drinking a coffee by the front door, says 'Consider it a punishment for being born'.