One who flashes their brights at other cars for no reason.
Note- there are many reasons for flashing one's brights. One of the most common reasons for flashing your brights at an oncoming car (often done twice in quick succession) is to warn the driver of a police car (popo)nearby so that the driver does not get caught speeding.
A person who takes the last bit of water from a Keurig coffee maker and walks away leaving it flashing blue rather than refilling it for the next user.
The person who makes a a cup of coffee with a Keurig coffee maker and walks away from a flashing low water signal leaving the next person to fill it with water.
1.)Someone whose fashion sense and swag is so amazing it makes others think s/he is an asshole.
2.) Some who acts like an asshole because they know they look good.
A girl named Ashley took nudes of herself and emailed to a male friend. That 'friend' took the ~pleasure in sharing the pictures with others.
Thus, Flashley.
Dude #1: "I heard Ashley's vagine hangs like sleeve of wizard..."
Dude #2: "It does. I saw pics. She looks like a total yeti down thurr."
Dude #1: "Lmfao, Flashley!"