Ep 9. Last Laugh

Ben 10 is an American animated television series that aired on the Cartoon Network channel from 2005 to 2008. The show is about a young boy named Ben Tennyson who discovers a device called the Omnitrix, which allows him to transform into various aliens with unique powers. Ben soon learns that he must use his newfound abilities to defend the Earth from various villains and threats.

Season 1 episode 9 of Ben 10 is titled "Last Laugh." In this episode, Ben and his family are on a road trip when they come across a circus that has been taken over by a villainous clown named Zombozo. Zombozo has the power to hypnotize people and make them laugh uncontrollably, which he uses to control the performers and audiences of the circus.

As the Tennyson family investigates, they discover that Zombozo is actually a criminal who has been in trouble with the law many times before. Ben decides to take action and uses the Omnitrix to transform into his alien form, Stinkfly. Stinkfly is a flying insectoid alien with the ability to shoot sticky slime and fly at high speeds.

As Stinkfly, Ben tries to take down Zombozo and free the circus from his control. However, Zombozo is too powerful and manages to hypnotize Ben into laughing uncontrollably. With Ben out of the picture, it's up to his grandfather Max and cousin Gwen to save the day.

Max and Gwen use their wits and skills to distract Zombozo and free the performers from his control. They also manage to snap Ben out of his hypnotic state by reminding him of his responsibility to protect the Earth. Ben transforms into another alien, Upgrade, and uses his mechanical powers to shut down Zombozo's equipment and free the circus for good.

In the end, the Tennyson family drives off into the sunset, having saved the day once again. The episode ends with a hint at even greater challenges and adventures to come for Ben and his alien forms.

Overall, "Last Laugh" is a fun and action-packed episode that showcases the strengths of the Ben 10 franchise. It's a great example of how the show mixes humor, action, and adventure to create a unique and exciting viewing experience. Fans of the show will definitely want to check out this episode, as well as the rest of the series.