The 3rd from a series of movies involing a tentacle parasite that transfers sexually between hosts and possesses them. Earlier in the film, the parasite jumped from a comatose female patient in the hospital to the nurse in this scene. The nurse then lures the school teacher to this utility room... Later in the movie, the teacher goes to her school, sleeps with and (predictably) kills a male teacher, then torments 2 schoolgirls with her tentacles. Background: in the first film, a male teacher is infected with the parasite, torments several women with his tentacles, and is killed at the end, but not before he transfer the parasite to a lady teacher. In the second film, the teacher brings the parasite to a group of campers, where it jumps from host to host, eventually ending up in the woman who is taken to the hospital at the end.
