A human being (whether it be male or female) That not only acts very arrogant in social situations, but usually has a very low amount of intelligence as well to go with the way they act. They are psychologically usually convinced they are the smartest, best looking and Superior as compared to other people. If you insult one, they usually try their best to get into fight with you, or they try to turn the situation to make you look like you're the one in the wrong. Have a very hard time keeping employment to some degree because of inability to work with other people.
The kind of girl/guy that goes to the bar and we'll buy a drink for somebody else but in the end will become a completely different person once you don't give into their demands. Possibly in the same night . Most douchebags don't think too far ahead. They don't like people who are not like them.....
Maybe I should have put this as a different definition. A good example of douchebags in general, and a simple way to put it, would be that they are primarily concerned with trying to have sex with every girl that they come in contact with or think girls owe them something or unyieldingly think everyone knows them something constantly.
"oh wow dude you're a douchebag"
Best described as a mental condition that is completely and utterly completely. Absolutely fucking insane. To the point where as I'm reading this actual definition. I can only imagine someone with such a point of insanity in their mind..... That at some point they just stop interacting with everyone entirely and if anyone comes within like two distance feet of them, possibly even less. They will show you examples of why they are completely nuts. It will be very visible to someone who observes someone who is batshit insane.
Dude that person is bat.shit insane