Kermit sipping tea refers to a meme, that’s widely known as “but that’s none of my business”.
It’s an image macro of Kermit the Frog from the Muppets show, drinking tea, with the quoted phrase.
The meme is used as a disclaimer after insulting or educating someone online.
Three days after the first post, an Instagram feed, named @thatsnoneofmybusinesstho was conceived with the titular captions posted on various pictures.
Within months, the meme took over Twitter, as well as Tumblr and it started to be a frequent post on 9GAG as well.
As of February 5th, 2021, it is one of the most recognized memes on the internet.