This song is about a woman who is a drug addict. She basically will do anything to get more drugs, including picking up random strangers. In the video it makes clear that she is homeless,most likely because she spent all her money of drugs. In the music video, near the end, she hitches a ride with a random guy, and they end up hooking up (probably happens a lot to her). It shows multiple scenes, like taking off her leggings, them touching each other in 'dirty' ways, etc. But at the end she gets this drug, which she consumes and it kills her. It is a great video that matches the song, which makes it that much easier to interpret the song's meaning.