This was a very very long time ago but I had a really bitchy sub in 8th grade. One time I was trying to find a pencil in my backpack that was sitting next to me and I was just scrambling though my messy bag trying to find one and all a sudden the teacher who was looking really depressed and stress started yelling at me for finding a pencil. I remember her reason was because "you are not participating in class" because I had a paper I front of me that I needed to do......but I couldn't do without a pencil. She took away my bag and told me to sit here as she continued on. Mind you I was still sitting there needing a pencil. The kids around me where also like "wtf" and just so happens that none of them had a pencil. Mind you she was still yelling at me after 5 minutes of class.... All when another teacher walked in and was like what's going on and she had no reason to yell at me so she simply tried to make up a story and say that I did something.. That's when the whole class (including those really good straight A kids who everyone trust and never gets in trouble) said that I did absolutely nothing. She then was told to go outside the classroom to have a talk with this teacher and she left the classroom and another sub filled in. She was obviously having some type of personal issue and was just taking her anger out on me. She was really depressed in the very beginning of class and seemed to be in a horrible mood.