My head has been known to bobble, to and fro, from time to time. I've never put my head on someone's dashboard to bobble for them but I've been known to bobble and babble at the same time, too.
I offer classes if you are interested. The class costs a bottle of Jameson. After that, we are good to go bobbling to and fro and whatever else you would like to learn.
Merlin 