What does it mean to be a light bulb?

When a light bulb means when someone is dating, especially when watching movies and eating with the opposite sex or lovers, such as their close friends or girlfriends, they are not interested in one party and hinder others from intimate activities. This is the third wheel.

Light bulb, a common saying, comes from the Cantonese proverb light bulb, which mainly refers to the third party who is in the way when men and women are in love. Many people think that light bulbs can emit light, which affects the romantic atmosphere at the scene. This is a misunderstanding. In daily life, it is often used by the third person to tease the intimate relationship between the other two. Because there is an allegorical saying in Cantonese, the light bulb is not ventilated.