What does Bumper Zit mean?

Bumper Zit meaning in Urban Dictionary

Those esthetically unpleasing small round sensors found on many vehicle bumpers that offer an audible proximity warning when parking. They typically look out of spot and so are perhaps not integrated into the general design for the car and therefor watch out of destination and unsightly... like a zit on your face. One thing you would like you can pop to own them disappear completely and work out the vehicle more breathtaking.