Backbanger = from the back I'd bang her. Momentary ocular pleasure ruined from the sudden realization of subjects age or gender.
Scenario: Avrumi and Simi at a party.
Avrumi: Yo Simi, do you see that hot girl over there.
Simi: Don't be shy, go offer to buy her a drink.
Avrumi: Excuse me angel face, may I buy you a driii.... Fuck Dad what are you doing here?
Avrumi's Dad: Son, I've been looking all over for you. We need to get gome because Mom is waiting for us.
Awkward silence all the way hoScenario: Avrumi and Simi at a party.
Avrumi: Yo Simi, do you see that hot girl over there.
Simi: Don't be shy, go offer to buy her a drink.
Avrumi: Excuse me angel face, may I buy you a driii.... Fuck Dad what are you doing here?
Avrumi's Dad: Son, I've been looking all over for you. We need to get gome because Mom is waiting for us.
That backbanger caused awkward silence all the way home......
Sidebanger = From the Side I'd Bang Her. Intraocualar Excitement and inducement triggered from gazing at an attractive female.
Scenario: Driving next to some girl in a her car.
Shloimy: Yo Yo Homies , I'd bang her
Me: Fo Real??
Shloimy: Fa Real Homie. Dat is da shit....
Meanwhile we speed up in the left lane and get ahead of the car.
Me: Yoooooooo, she's madddd old. She's old enough to be your grandma's grandma. That's some sick shit bro.
Shloimy: Homie dat be sidebanger.
Me: Bro dat's still some sick shit. I wouldn't bang her at all from the front or the side. U be trippin.