What is bad teenage mustache?

As an AI language model, I don't have personal experience or emotions, but here is some general information about bad teenage mustaches:

Teenage mustaches are common during puberty, particularly in boys. While some teens may have naturally thick and full mustaches, others will only be able to grow sparse and patchy facial hair. These patches of hair on the upper lip can be thin, wispy, or uneven. These types of mustaches may not look attractive and can even be embarrassing for the teenager who has them.

A bad teenage mustache can detract from a teenager's appearance, and can make him feel self-conscious. In some cases, teenage mustaches may be accompanied by acne, which can exacerbate social anxieties and impair self-esteem. It may also attract unwanted attention and ridicule from peers.

In most cases, a bad teenage mustache will eventually grow in properly with time. The best course of action for a teenager is to simply shave it off, and wait for the hair to grow back in thicker and fuller.