macuaro
A macuaro is someone who thinks they're better than everyone else, but they're just loud and clueless. They’re like a dog who thinks it’s a lion.
He bragged about his video game skills, but he couldn’t beat a 10-year-old.
She said she knew everything. Then she asked what a triangle was.
He tried to be a superhero. Now he just stands in the hallway and yells.