A person who enters into a task late, doing nothing, and declaring victory or credit as if they had participated when they did not. Derived from the classic description of how the Orbis Protectors triumphantly crossed the battlefield during the Norman Conquest of 1066.
Student A: Wow, I can't believe we got an A on the group project!
Student B: "We"? Come on, don't be an orb waltzer. You didn't even do the 3 PowerPoint slides you promised us.
(n) The unfortunate results of trying to take a selfie which overly-enthused, and ending up looking like you're sending out a warning for people to be on the look out for the crazy person looking to score.
"I know Sean wanted to show he was excited to have defeated that pig in wrestling, but he took a methie, poor dude."