爱妃跪下接旨本宫不跪抗旨
[ài fēi guì xià jiē zhĭ bĕn gōng bù guì kàng zhĭ]
This internet username is like a line in ancient palace drama which translates as: 'Empress, I accept your decree only on my knees; but Your Majesty, I stand here refusing'. It shows one's playful resistance attitude, borrowing the imperial language of ancient China and role-reversal humorously setting the user as royalty.