Palilalia is defined as involuntary repetition of words or sentences in talking, and is often associated with Tourette's Syndrome as a complex tic.
In my case, I often end up with a handful of words or phrases which I compulsively repeat or say -- sometimes they occur in every other sentence I say, sometimes they're an automatic response to certain triggers and sometimes they're just out of the blue.
I've had this compulsive behavior my entire life, but I hadn't identified it as a tic, or anything particularly unusual, until recently.
It can be annoying to me, and it drove my fianc?e nuts until she was able to get used to it. :P
Anyone else have similar experiences?