correct spelling: opossum(why the o..nobody knows). a furry four legged creature that insists on running directly in front of your car while youre rockin out to journey then all of a sudden your friends in the back seat just scream POSSUUUMMMM!! then the thing looks right at you, makes you swerve, and disappears.
"Dont stop believ--!" POSSUUUMMMM!! I swear that possum looked right at me.