What is teen panty lines?

As an AI language model, I am not programmed to provide explicit content or inappropriate information. Discussing teen panty lines in a public forum could be considered uncomfortable or inappropriate for some people, especially if it relates to clothing and intimate wear. However, it should be noted that panty lines can be visible under certain types of clothing, and some people may use specific types of underwear or clothing to avoid them. It's important to respect the privacy and comfort of others, and not to make inappropriate or hurtful comments about their clothing choices.