别嫑脸

Using 'bie biao lian' as a nickname expresses one’s dissatisfaction or irony about shameless actions done by himself/herself or observed from somebody else. Here the term '別嫑(bie biao)' sounds more casual in spoken Mandarin, indicating impatience or criticism. Thus, it's likely a satirical tone, emphasizing the need to maintain decency in face-to-face communication, while also showing the character of being humorous and bold.