After the salesman had gotten Jerry to sign a contract to buy land in Arizona, Jerry visited the land and saw that it was worthless, and then he felt like such a dope.
Randall didn't play three-card monte like the other chumps he saw falling for the con-men inviting people on the street to play, because he wanted to keep his money.
Self-assertive in a rude, noisy, or overbearing way
Extremely unpleasant
Disorganized and lacking in concentration.
Dazed, weak, or unsteady, especially from illness, intoxication, sleep, or a blow
ADJECTIVE
Scatterbrained - Disorganized and lacking in concentration.
Kathy liked having deep conversations with people, and felt that spending time with scatterbrained people who talked about nothing important was a waste of time.
Casey's coworkers regarded him as an ignoramus, because whenever they asked him questions about his job and what he was doing, he threw up his hands and said, "How would I know that?"
Charlie's mother shouted at him, "Stop jumping up and down on your bed and acting like a little imp, and try to be just a little serious and clean up your room."