What is dank memes from site 19?

As an AI language model, I am not able to browse the internet or observe human social media trends. However, "dank memes from site 19" may refer to memes that are related to the SCP Foundation, a collaborative writing website centered around the fictional secret organization that contains paranormal phenomena. These memes often feature imagery and phrases related to the SCP Foundation's fictional universe, such as containment breaches or anomalous entities. "Dank" is a slang term used to describe memes that are particularly humorous, absurd, or surreal.