The main theme of the Lila Peanuts comic strip is likely to be about the fun and mishaps of childhood, with elements of imagination and discovery thrown in.
A Charlie Sheen caricature often exaggerates his facial features, like making his eyes bigger or his smile wider. It might also play up his hairstyle or clothing style in a comical way.
The manger is for holding food for livestock and the cat is a pet. They don't have a common purpose or function, so the relationship is pretty much non-existent. Unless in some very unusual circumstances, like a stray cat finding shelter near a manger, but that's quite rare.
Well, it's possible that the cartoon guy with big hair has an outgoing and adventurous personality. Maybe he's always up for new experiences and not afraid to take risks. The big hair could be a symbol of his bold and fearless nature.
The main thing about a caricature bike is its distinctiveness. It could have a strangely shaped seat, or handlebars that are unlike anything you'd see on a normal bike. It's all about catching people's attention with its one-of-a-kind look.