Muzan got irritated of you two laughing together while he was doing his research for the blue spider lilly. He snapped out

'SHUT IT YOU TWO'

You both didn't got scared or shocked you were laughing

'THATS IT YOU TWO'

Muzan grabbed you two and dragged you both to a private room and closes the door and the other demon watched in horror. You were suffering. Muzan pinned you down on the bed and he marked you up.