Q-flash is a network language, formerly known as "skirt flash", which is a self-proclaimed expression of women in network language. Generally appear on social platforms such as Weibo and WeChat. In order to increase their sexiness and affinity, some female users will add the word Q flash after their names. For example: Xiaohong Q flashes, Lucy Q flashes, and Brother Yong Q flashes. The popularity of this online language stems from the influence of online social culture.

Q flash can also refer to flash. In online chat rooms, social software and other platforms, sometimes people need to communicate quickly or express some emotions. At this time, the flash will appear. At this time, users will send messages frequently to achieve the effect of fast communication, and flash is usually called Q flash.

In addition, Q flash has another meaning, which is similar to the flash photo in qq signature. Some women will protect their privacy by uploading their photos on qq space and checking "flash photo". Because flash can only be viewed under certain conditions, it has certain privacy and confidentiality. This flash can also be called Q flash.