I thought the main actor was chris kattan but i couldn’t find the movie under his name. This is about a man that use to do drugs and was a jerk to everyone. He killed a prostitute in the ally way because she wanted more money (He does a few things like that) anyway he did something to a man but he doesn’t remember. So this man cuts his fingers off let’s other people this guy hurt come in and cut something off. At the very end he gets an injection that is going to kill him and he finally remembers what he did. He bumped into this man and didn’t apologize.

Definitely a horror comedy. If anyone canhelp that would be great thank you!