When I was in grade 5, my teacher was really annoyed at the class and was standing near my desk and she said something like "I don't like it when you guys push my buttons!". I knew that "push my buttons" meant "purposely annoy me" in that case. However, I was a bit silly that day and she was wearing a buttoned-down shirt, so I pushed the buttons on her shirt.
When I hear a person's name, I see an "action" associated with it. When I was in grade 3, I associated a women wearing a black coat and a tie, falling over backwards with my teacher's name. On the second day of school, I said "(name of teacher) fell over backwards!" She gave me an annoyed look and I said "sorry".
I don't know how mean this would be considered, but last semester, my favourite teacher went on leave of absence (he still is on it) and got a sub. I really wanted my favourite teacher to be back, but I didn't know when he'd be back. I didn't actually have the teacher last semester, but I was supposed to have him this semester. Anyway, the teacher didn't start teaching until the third block. However, sometimes the sub for the teacher on leave of absence arrived before then. Sometimes, during block 2, I'd go out into the halls and see him, so I would know that my favourite teacher probably wasn't back. So, during block 2, I'd do my best to avoid seeing him, I wouldn't walk through the hall that he was frequently seen in for example. I'd even get other people to check the halls before I went out to make sure it was "safe", which meant that the sub wasn't in the hall. However, he never and still hasn't, found out about it.
I have also done some other things that I don't want to mention here.