Someone sends an instant message "Hi" to you, and you reply, "Hey! How are you?" -- and then... you wait around.. and nothing. Nothing for like forever. Then they go Idle, and leaves you with a big case of WTF?
When you see a hot bitch on the streets and follow her until she goes to her house and knock on the door pretending to be a neighbour and ask if you can come in and have sex and run back to your house and never talk to her again,
The act of seducing a girl in order to smash her, and then shortly after, fleeing from the scene, leaving the girl wondering what the fuck just happened. In a hit and run, you either don't give the girl your name and number, or you give her a false name and number. It is a common scenario in one night stands, and is usually demeaning and humiliating for the woman, but gives the male something to gloat about to his friends.
John: Dude, I pulled a hit and run on Jessica last night!
After toking up, the act of leaving the gathering without socializing or at the very least saying thanks.
Taking a hit and leaving. Very uncool behavior.
