Miley's Grandma Gets Tossed in the Rear

3/24/2009 1:30 PM PDT BY TMZ STAFF
Miley Cyrus fed her burger cravings with a trip to In-N-Out yesterday -- but her sweet lil' grandma had to get her buns in the backseat with the dog!

Miley Cyrus: Click to watch
One of them enjoys long drives with the wind in her face.