Fender is the car body part that is right above the tire. Bender is derived from bend. Since the fender is a small part compared to the hood and door, and bend is not as bad as break or crack, combining these two indicates that the accident is very small. Like a small dent or scratch.

Fender是擋泥板，是在汽車輪胎正上方的一個部分。bender是由bend而來的。由于擋泥板相對于引擎蓋和門來說是一個很小的部分，而彎曲了也沒有折斷或裂紋那么嚴重，結(jié)合這兩者說明事故是非常小的。比如一個小凹痕或刮傷。

A: I got into a car accident.

我出了車禍

B: That sucks. You didn’t get hurt did you?

那太倒霉了。你沒受傷吧?

A: No. It was just a fender bender.

沒有，就是個小剮蹭。