Old VW Rabbit convertibles popular with college co-eds back in the day. The rollbar over the top is the bucket handle, the car is the bucket, and the chicks inside are the beaver.
Sandy and her girlfriends pulled up to the beach party in their beaver bucket.
Billy: Did you go downtown last night?
Jim: Yah, but not worth braggin' man that shit was a buckwheat beaver, bro!
Billy: Are you serious?
Jim: Yeah, I'm still pullin pube's out of my teeth!