I've always been a bit of a wuss when it came to manly things. Even the most basic things you never even think about, like a handshake. If a man shakes a woman's hand, he naturally shakes it with gentle care. When he shakes a man's hand, it's usually quick, strong, and hard. In fact, a lot of interview tip sites will actually tell you a firmer grip is actually supposed to help you because it makes you look aggressive and confident. I actually hate it. Not because it's necessarily uncomfortable, more like it's a shock of "woah, I forget some men shake like this". Had a couple new hires recently at work, and both of them greeted with that typical strong handshake.