Something that irritates me the most

The thing that irritates me the most is when is people smack while eating. Males have a bad habbit of doing that. Everyday at lunch they do it to irritates me. I tell them everyday to stop smaking. I think they do it on purpose. I also hate when people ask you the same question more than twice on purpose. When people chew gum with there mouth open it irritates me to the fullest. When people say they have something and they don't irritates me because, they just want to fit in.