When the collar of any piece of clothing is pulled down or out, often to indicate that a character is feeling hot and is getting fresh air into their clothes or as a sign of nervousness.
Not to be confused with shirt pull or any other form of clothes pull, which is used for when a character intentionally pulls down on the collar of a shirt/dress/etc. to reveal the cleavage, breasts or pectorals, although sometimes it may come as a result of a collar tug, in which case it should be tagged as both, and even as accidental exposure if it applies.
