A site fully called deepdreamgenerator.com it distorts images into creepy shit usually with dogs.
Full nerd definition given by the site itself:
"Deep Dream: Initially it was invented to help scientists and engineers to see what a deep neural network is seeing when it is looking in a given image. Later the algorithm has become a new form of psychedelic and abstract art.

Deep Style: The technique is a much more advanced version of the original Deep Dream approach. It is capable of using it's own knowledge to interpret a painting style and transfer it to the uploaded image. "

A casual invitation / threat used by an individual that is not afraid of fucking someone up.