I can come across as very quiet with people that don't really know me too well, because it's a lot easier to stay quiet that talk sometimes, so when someone at work makes a joke, I've got a great come back, but I know I can't say it out loud so I just smile and laugh, it can be very frustrating when it's a good come back though, so I guess people don't really notice the stutter because I only talk when I know I can.