我只在你面前装傻
[wŏ zhĭ zài nĭ miàn qián zhuāng shă]
This online name conveys a sentiment that the user only acts silly or naive when they're around the person who means the most to them. It could imply a playful intimacy between the two of them, suggesting they don't mind being vulnerable with this specific individual. A bit like someone who is comfortable enough to 'act stupid' in front of a trusted friend or love interest.