Buddy: I find that my nipples get rock hard just before I cum. One night while watching TV, I noticed my twin brother playing with his nipples. He said that the movie we were watching was making him horny, and his nipples hurt because they were so hard. He left to jerk-off. The next day, at work, we asked a few friends if their nipples got hard. The rsponse was amazing. Like, after a shower and you get the chills, or swimming in a cool pond, when you get in to bed on cool sheets. The greater the chill, the harder I get. Nipple size also facinates me. My nipples are large and I sport a 6.5 x 4. Do you think nipple size and dick size relate?