My muffler came loose, and it's dragging on the ground.
The location of the components along the exhaust system makes them prone to very bad rusting. Rusting is ever worse in colder climates due to the use of salt and sand on the roads when winterizing. In addition, rubber hangers are used to suspend the plumbing along the vehicles belly. These rubber hangers are prone to dry, crack and fall apart over time causing the components to sag or fall. Have the vehicle inspected by a muffler or exhaust shop which can handle the repair in either scenario.