It is the way they do it that is driving me insane. My dad either does it when he is happy after hurting my mom or after making trouble or he does it sounding like a maniac. When my mom does it she is copying him, she too was annoyed by him doing it at first but now she does it too and sometimes she does it so much that she is more annoying than he is on that day. If they would do that normally I would not mind most of the times (i admit that it would get me annoyed sometimes of course but not all the time and not to the point of about to blow up from the stress). It is so much that when I hear someone do that I want to hit that person (i of course dont do anything verbally and physically) and even some noises makes me think of that.