car drunk

When you've been riding in a car for so long, you walk like a drunk after getting out because your legs are so weak.

Driver: Why are you walking so funny?
Passenger: You drove too far before letting us get out. Now I'm car drunk!

Buy car drunk

When you are so drunk that you buy a car and don't realise you did until the next day.

You did what!! Fuck you must have been buy car drunk!!!