http://thesaurus.reference.com/browse/obnoxious
Obnoxious and disliked
obnoxious ordinary obsolete original
He is not only arrogant but also foolish and obnoxious. OR Her attitude towards the guests at her birthday party was obnoxious to say the least.
The correct spelling is "obnoxious" referring to behavior, meaning unpleasant, boorish, or irritating.
One word, Obnoxious
The teacher found the students obnoxious behavior to be inappropriate.
Noxious is like poisonous or harmful to health, obnoxious is like insulting or offensive.
nocturnal or animals of the night
A "dousebag" is a slang term used to describe someone who is perceived as obnoxious, arrogant, or overly self-assured, often in a way that is annoying to others. The term combines "douche," a derogatory term for someone considered unpleasant, with "bag," implying that the person embodies these negative traits. It's often used in casual or humorous contexts to call out someone's behavior.
The expectations, or rules of behavior, that develop out of our values....is the answer!
Optimistic and outgoing are nice words to describe yourself. You also could describe someone else as oddball, obese or obnoxious.