I make a weird head jerking movement and can't help a little whistle that just comes out and it really annoys people. What is wrong with me, please?
Could be Tourette's syndrome.
Are you presently using too many of those energy drinks like Red Bull.? ⬅ nasty stuff plays havoc with early symptoms of Tourette's.
I'm not a doctor and I don't pretend to be one on blurtit, maybe you should talk to your doctor about that.
It sounds odd you may have a disorder known as Tourette’s Syndrome. This will cause involuntary muscle spasms that you can’t control or surpress easily and will make you grunt, snort, etc without wanting to. In severe cases, you will swear without wanting to. I recommended a proper diagnoses by a doctor.