Disrespectful People
One of the top things I hate is disrespectful people. I think being rude is one of the worst traits a person can have up there with being a snitch. The reason I think this is I know that who ever is being disrespectful would want to be treated right and be respected but aren't treating others the way they want to be. For example in school when kids repeatedly interrupt teachers or just horse around the whole class time and just plan out making the teachers lives harder.
Snitches
The worst trait a person can have is being a snitch. I hate people that are snitches because they only do it to get people in trouble for simple things like taking an extra mint when you were only suppose to take one and they do it only to get attention. It is more of a time waster for everyone. Now someone may tell on someone for lets say bringing a gun to school which is okay and to me not be categorized under snitching but more of just informing someone.
Silverware cutting a plate
Some people may hate the sound of gum popping or people brushing their teeth but I hate the sound of silverware screeching on plates or dishes in general. It gives me giant chills down my back and all over my body. It makes me shake too just like a cold chill and makes me grit my teeth.