A signature block at the end of emails or posts.

电子邮件或帖子结尾的签名栏。

To playfully tease or taunt; to signify in boastful talk.

善意地取笑或打趣；以言语炫耀或逞能。

Initialism for special interest group, an organized topic-focused group.

“special interest group”的首字母缩略词，特定主题的兴趣小组。