dimetapp: trade name for a drug containing an antihistamine and a decongestant; used to relieve nasal congestion and to treat rhinitis
nasal decongestant: a decongestant that provides temporary relief of nasal symptoms of the common cold and rhinitis and upper respiratory infections
russian roulette: a stunt in which you spin the cylinder of a revolver that is loaded with only one bullet and then point the muzzle at your head and pull the trigger