Yes, men and women see colours differently. Men have a hard time telling the difference between certain shades of yellow and green, for example.
When it comes to gas, men are better than women. Males do have a lot more gas, which is probably not something they are too proud of. The reason, however, is still unknown.
This does not happen very often, but it can. For this to happen, there must be a big increase in the hormone prolactin, which is what makes the body make milk.
Men of any age can get it, but as they age and their testosterone levels go down, they are more likely to get it.
This could be because people are sitting around more, their diet has changed, they are getting older, or their hormones have changed.