I saw a video on YouTube (I forgot the name) that I what to know what movie it came out of.
Its about a young man got a report card and got a spanking with a belt or paddle. (Mothers playing piano wile spanking in progress) after the punishment ends shake hand's . Send his stepfather to hospital for revenge


So anyway, What's the movie please?

Sounds like something that would happen in Stepfather 2.
Stepfather II - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Stepfather_2)