There's a lot of good responses here, the corolla youtube was good too.
To me the key word here to identify a douchebag is Poser. Douchebags usually employ multiple gimmicks or popular trends to attract attention and look cool to girls. He not only has a "Tap Out" T-shirt on, but he has a tribal arm sleeve, black on black, acting tough (9/10 times he's not), Faux hawk, bandanas, live strong braclet(ie: I love boobies) rip off, sticker on hat, etc., etc.
Then you got the white guy wearing all this and sporting a bandage on his cheek like he is Nelly, for the extreme example.
Point being the more of these douche trends you employ the bigger douche you are imo.
To me the key word here to identify a douchebag is Poser. Douchebags usually employ multiple gimmicks or popular trends to attract attention and look cool to girls. He not only has a "Tap Out" T-shirt on, but he has a tribal arm sleeve, black on black, acting tough (9/10 times he's not), Faux hawk, bandanas, live strong braclet(ie: I love boobies) rip off, sticker on hat, etc., etc.
Then you got the white guy wearing all this and sporting a bandage on his cheek like he is Nelly, for the extreme example.
Point being the more of these douche trends you employ the bigger douche you are imo.