minor car accident
The ¡®fender¡¯ refers to the part of the car¡¯s body that covers the tire.
In a ¡®fender-bender¡¯ there is some damage to a car, but not enough to make it impossible to drive.
I had a fender-bender this morning, so I've got to go to the auto shop.
Fender-Bender: When a man gives anal to a chick and he misses, bending his fender
Jeff: Man it looks like you have a boner but somethin's awfully wrong wit dat meat
John: Yeah, I had a bit of a Fender-Bender with Miss Norris over there