打酱油的卖个萌
[dă jiàng yóu de mài gè méng]
This is a lighthearted username that combines a common idiom with cute internet slang. 'Dǎ jiàngyóu' (打酱油) means 'to do something casually or aimlessly,' similar to 'browsing' online, while 'selli moe' (卖个萌) means 'to act cute.' So it translates as 'casually browsing and acting cute.'