1.To place one's asshole on thy knee and drive thy cock along tis thigh as the one on thy knee is holding thy cock with tis hand flat open. Tis person on thy knee is cockdriving while person with tis asshole on thy knee is being cockdriven.
2. Driving with your cock.
1.Dude, that cheerleader was Cockdriving me last night! She's such a little whore.
2.Cockdriving is my thing, my dick is just THAT big. =]