1.) The puff of stale flatulent air trapped in upholstery or foam that is released when the victim sits in the chair holding the stale flatulence.
2.) The waft of air that is released when a trash bag is sealed.
There was some serious assmosphere when I sat in Milton's office chair.
The trash's assmosphere is still lingering hours after I took the trash out.
8👍 5👎