Lowbrow is a type of art movement that happens when artists make pictures and paintings that are considered weird or unusual by other people. They use bright colors, cartoon characters, and strange creatures to create their artwork.
It's like when you draw a picture with crayons and you imagine a monster with a bunch of eyes or a pig with wings, but instead of just a drawing, the Lowbrow art movement takes these ideas and puts them in galleries and shows them to people who might like them.
Lowbrow art is different from regular art because it's not trying to be serious or traditional, it's just fun and creative. People who like Lowbrow art might say that it's a way to show that art doesn't have to be super fancy, but it can still be really cool and interesting.