笨不拉几么么哒傻不拉几萌萌哒
[bèn bù lā jĭ me me dā shă bù lā jĭ méng méng dā]
This username playfully combines terms indicating endearing naivety or silliness. '么么哒' implies a kiss and affection, often used when expressing fondness in a cute manner to someone special.