The two main characters, Weebl and Bob, are best friends, but are easily prone to harassing and insulting each other. Both characters are egg-shaped creatures with wide mouths that split their heads in half, like Canadians, and move by rolling, hopping or swaying back and forth. They mutter and 'talk' in a way seemingly only intelligible to themselves. Weebl is the larger of the two; it is revealed that Bob's small stature is due to a cheese overdose in the 1980s. Many of their stories are centred around their love of [[pie]], a devotion shared by most of the other characters in their world—these episodes generally depict one of their several (often failed) attempts to obtain it. Some episodes are a vehicle to introduce a new character into the storyline, while others are parodies of cultural phenomena, such as ''[[Hello Kitty]]'', Japanese [[karate]] and [[ninja]] movies, '80s anti-drug documentaries, [[Michael Moore]]'s documentary film ''[[Fahrenheit 9/11]]'', ''[[Kill Bill]]'', the crime drama ''[[CSI: Miami]]'', the [[iPod]] [[IPod advertising#Silhouette_style|"silhouette" ad]] campaign, the MTV show ''[[Pimp My Ride]]'', the game show ''[[The Krypton Factor]]'', Mel Brooks' ''[[History of the World, Part I]]'', the video game ''[[Portal (video game)|Portal]]'', ''[[Final Fantasy VII]]'', the [[Academy Awards]] and even retailers such as [[PC World (retailer)|PC World]] ('Pissy Werld' in the show), [[IKEA]] (or 'PIKEA') and [[Matalan]] ('Catalan').
