All you need to know: Bobcat Goldthwait wrote and directed this.
His previous directorial effort Shakes The Clown is a cult classic and this is pretty close to that yet is oddly “mature”. The humor is even darker in this one, especially since teen suicide as a way for a father to get some attention, is pretty dark.
Here is the blurb from Netflix:
After his son (Daryl Sabara) dies in an awkward freak accident, high school poetry teacher Lance (Robin Williams) ghostwrites a suicide note to spare the family embarrassment. But when the note becomes an unexpected hit, Lance sees a chance to resurrect his writing career. In a bid for literary fame, Lance writes his son’s journal and passes it off as his own.