An alternative name for tequila. Refers to its use as a painkiller by the poor and those without health insurance who cannot afford prescription painkillers.
When Sandy broke her finger, she killed the pain with Mexican morphine.
One who has become Addicted to Opiates, has that drugged out nodding appearance and will do anything it takes to obtain pain medication including using many doctors ect. .
Sally's out shopping for several new doctors she's become Quite the Mighty Morphine power ranger.