Oh don't worry, I've had those loads, I tend to get them on shrooms more often, if im walking out and about, and the other times are when sober, hasn't happened sincemarch 16th when i last did shrooms (Just before arriving at the mars volta gig).

These weird little pangs in the neck, feel like someones pokin you and it usually makes me jump! lol, sometimes they feel like someones shot you at a distance with a bb gun or sumthin or u got a little electric shock.

Nothin more than a little spasm in the muscles down the side of the neck - have no idea of the cause tho,could just be related to the muscles tension and turning your head slightly or something, probably down to loooads of variables that occasionally add up to make it happen rarely.

Nothing to worry about though,
Jonny