Q Nasty
A Q Nasty is the kind of person who thinks they're tough, but they're just a bunch of hot air and no real skills.
My cousin is a Q Nasty. He said he could beat up a bear, and then ran when it growled.
That guy at the park is a Q Nasty. He tried to do a handstand and fell on his face.
My teacher called me a Q Nasty because I said I didn’t know the answer.