It all depends on my partner and the situation. If I'm with a partner who is on the louder, more vocal side, I tend to be as well. If we're in a situation where we have to be quiet though, I'm very good at controlling it. As far as jerking, for the most part I'm very silent. On occasion, though, if I'm really into something, the breathing can get really heavy and I have unintentionally made noise. I get a bit paranoid because I have two roommates, lol. I'm just like- Aww shit! So much for being discreet, lol.