瓶盖 (pínggài) — 'bottle cap
Literally meaning 'bottle cap,' this term is used in online conversations to refer to someone who rarely contributes or participates in discussions, akin to being mute in a group. It can be playful or critical.
Example Usage
在这个群里，你就是个瓶盖，没什么发言。
In this group, you’re just a bottle cap, not contributing much.
Cultural Context
Often used in online chat groups to poke fun at inactive members.
Category: internet-culture