I remember when I was in school age 11 all the boys started talking about having a pamela anderson poster on the wall, and saying everyone had to have one and that everyone who didn't have one was "a faggot". And they went round the room saying "we've all got a poster of her on the wall right? cmon every guy has a poster of her, you're a faggot if you don't". I went home and said to my parents "can I have a poster of pamela anderson" and they said, why, do you know who she is, and I said, they said at school your a faggot if you don't have one (and I was nervous that a friend may come round one day and see I didn't have it). They wouldn't get it though.
Also I once saw a show when I was about 9 where a bunch of women were calling one woman a fat cow and laughing, so I went up to the largest girl in my class and said "big fat cow" expecting everyone to find it really funny especially the teacher as she was a grown up woman like the ones laughing on TV. But she cried and I got in trouble.
I feel so embaressed thinking of dumb things I said, I wish I could go back and tell myself not to!