It's from the '80s I believe, and is about a high school kid(at least I think) who somehow pisses off a bully. The bully says he's gonna get him at a certain time, and throughout the day the kid keeps thinking about it and/or the bully keeps reminding him. The kids then steals or finds a pair of brass knuckles. At the time of the fight, he puts them on and hits the bully. I can't remember if he beats the bully up or not. This has been bugging me for a while now, and I remember seeing it HBo or Cinemax alot in the late '80s. Thanks to whoever posts.