lurkuer

The person who secretly stalking the chat and doesn't want to engage the conversation. In stead, you just call them out as a 'lurkuer'

"Hey I think there's someone watching us."
"Meg, come out now, you lurkuer"

lurkuer mode

Someone who secretly observes the conversation without making any sound / presence to let everyone else know they are there. Mostly used in Discord group chat / server.

"Yo, have you heard of that girl's recent drama?"

"yeah I have heard! oh boi, it's juicy asf"

"IKR?? but maybe we-

Hey, I think someone is on their lurkuer mode here. Show yourself. We know who you are."