其实我是灯泡
[qí shí wŏ shì dēng pào]
The phrase 'Actually I am a Light Bulb' uses a metaphorical third wheel concept (often symbolized as a light bulb shining between two romantic people). This net name signifies feeling unnecessary or intrusive in social settings, particularly those with romantic connotations, though can also denote humility or self-effacing humor.