I do believe that occasionally a cough can be a form of communication, in this case, it is a)loud, so loud it makes you jump if you are in the same room or even next door b)sharp and piercing c)escalates in pitch ending in a sort of musical ornament. In the tonic sol-fah it would read: me! me! me! me! doh-la; the timing is three full beats followed by three half beats.
So what is he saying? He is in a very frustrated and angry phase. Otherwise I suppose I would just be offering the cough mixture.