I know there are lots of people who joy critisising but cant take criticism themselves. I think you actually have to think, an art which much of the general public have forgotten how to do! Sagitarius people always laugh and say "I don't think before I speak" and I think why are you laughing about upsetting people, but then these people just say "you should be thicker skinned". I fell out with a mate who was offensive to me, and when I told him that his comment was hurtful he said "I did nothing wrong, you chose to be offended". You know I just don't need such people in my life, and I just tell such animals that i'm not taking it, and that our friendship has ceased. Some think about it and try to change, others don't care, but its better to tell them if you think theyre nasty so at least they have a chance to change