look up any word, like bae:
 
1.
Two idiots who drive side by side because neither wants to nut up an pass the other. Usually at least one of them is texting
Look at these two bumper buddies. They're backing up traffic for a mile!
by Tatstastic July 21, 2012
 
2.
Buddies who have parking spots behind each other.
Hey Dr. Cox, I pulled some strings, and got the parking space right behind yours! Bumper Buddies!
by DrewpyDog7 March 24, 2011