Obnageous
A person who is so crazy and rude it’s like they’re from another planet. They probably don’t know what nice is.
My neighbor yelled at the mailman and threw a banana at him. He was obnageous.
My friend’s cousin tried to take over the restaurant. He was obnageous.
My dad's friend talked to the TV and yelled at the microwave. He was obnageous.