This is a brief (5 minutes exposition plus just under 5 minutes of questions) video that was designed for epidemiological research in tic disorders (including Tourette syndrome). The video shows lay people the broad definition of tics, so they can more accurately answer questions about whether they (or someone else they know) has a tic. The video is accompanied by a short questionnaire. People shown in the video (or a parent, for minors) gave written consent to the use of their video for this purpose.