Sounds like it's about drug addicts. In the first verse, they start using ("When the piston goes down, Your blood is sure to poison your mind"). In the second verse, they get addicted ("Fully cranked for weeks at a time") while thinking they still have things under control ("Believin' you're some kind of machine"), and finally, in the third verse, they start whining about how difficult their addictions are when they aren't strong enough to admit their troubles are mostly self-inflicted.
Perhaps it's about someone Mark knew, or perhaps it's just generally written. Could be either, really.
Sounds like it's about drug addicts. In the first verse, they start using ("When the piston goes down, Your blood is sure to poison your mind"). In the second verse, they get addicted ("Fully cranked for weeks at a time") while thinking they still have things under control ("Believin' you're some kind of machine"), and finally, in the third verse, they start whining about how difficult their addictions are when they aren't strong enough to admit their troubles are mostly self-inflicted.
Perhaps it's about someone Mark knew, or perhaps it's just generally written. Could be either, really.