I’ve seen people writing: “Have an Octotastic day!”. I’ve tried to search online, but I didn’t get any useful results. From the context I feel it’s a synonym for “fantastic”. I couldn’t see any details on usage of that word. Is it something made-up?
I believe this comes from the GitHub, a cloud based version control system. Their logo is the Octocat, and they often use the phrase “have an octotastic day”.