I'm looking for a movie I saw on TV once (when I shouldn't have lol) about 23 years ago. There was this slug alien or something that attached to people's backs and made their tongues long and killed people when they kissed them. This old lady picks up the slug and cradles it like a baby in her arms and coo's to it. I remember a chick kissing a guy on a subway or train and the tongue went right through his head.. this movie has been bugging me since then.
It is 'Brain Damage', a creature that give addictive liquid to the host (human) , and also give brain damage at the same time , causing hallucination .. and it also demand human victim..
The subway kissing scene is the host and his girlfriend , and the kiss killed the girl. The old lady is the previous owner of the creature who jealously want the creature back as she suffered severe drawback due to the creature moving to another host.