A jerk; a buffoon; a person who is inept or ill-behaved to the point of being found laughable by others.
A jerk; a buffoon; a person who uses their nature to bring humor to others, but ends up being the butt of a joke.
A quirky, silly and/or stupid, socially inept person, or one who is out of touch with contemporary trends. Often confused with nerd and geek, but does not imply the same level of intelligence.
A penis.