I almost never cry. I've suppressed it. There are a lot of stressful events that I suppose would make me cry like fighting with someone, being put down, maybe being rejected, failing a course, but most of these are very unlikely. I occasionally cry just from stress.
I'm with Dragon on this one. I haven't cried since my aunts funeral when I was 7 years old and now I'm 21. Other times I've forced myself to cry just because I don't feel human anymore and I just want to know how it feels like. If I see something sad I will feel it deeply in my heart but I don't show any emotion on the outside and that's exactly what makes me look as a cold bastard. Only if other people would know what my insides feel, alas, it would be another story LOL