Gafyag
A gafyag is a person who thinks they’re cool but are actually just a mess. They have no idea what they’re doing.
My friend is a gafyag. He tried to make a pizza and used ketchup instead of tomato sauce.
That kid in class is a gafyag. He wears socks with sandals and eats crayons.
My brother is a gafyag. He tried to fix the TV and now it doesn’t work and he doesn’t know why.