Adios wormhole is a photo of a man in red suit going in a wormhole and white text saying adios. It is a photo.
There was a picture of a man walking to wormhole on a website called Cuded on september 12 2012. The image is credited to Imaginary Foundation "a think tank from Switzerland that does experimental research on new ways of thinking and the power of the imagination." (copied)
Someone posted the edited version on facebook. The origin of the image is unknown. It was reposted on twitter. User @reactjpg posted it with a caption saying: "man in durag and giant clothes entering wormhole in space adios"
A redditor posted it on the subreddit "r/ComedyHeaven" And it gained more than 8,600 upvotes. (99% upvoted). And then, they started using it as a meme.