When I think of / remember something embarrassing from my life, I compulsively make some kind of noise. It seems to happen unconsciously, before my censor can catch it and stop myself (it even happens when I am in a quiet or inappropriate place). It’s not especially loud, in fact it’s often under my breath. The sound is usually just a quiet grunt, or a word/syllable or two. … It usually only happens when I’m remembering something palpably embarrassing or humiliating from my life — not for mild everyday kind of stuff. … So what is this, do I have some kind of low-grade tourette’s syndrome? Is there a name for this phenomenon? Does it happen to others or is it unique to me?
This happens to me sporadically, and from the dozens of responses on Ask MeFi, it’s not uncommon.