You already know what a Marsean is, you just don't know it yet. A Marsean is exactly what you don't know that you think it is, a Marsean. You'll see a Marsean and be all, "aw sheit it's Marsean!" But don't make it awkward, because sometimes it's not a Marsean. Also you might not always be like that, sometimes you're all "who's that guy." But don't count on someone always being quick to say in response, "dat boi's Marsean!" Many believe you can tell the prestige and aptitude of a Marsean's skills, and their aspirations by their ass. What is its orientation, its shape, its size, and the way he carries it? But many people won't care to know this, cause when they know this, they know they aren't going down, because nothing they've ever known will be able to explain what they need to know in order to affirm this is how to understand a Marsean.
They like to play the guitar, play games, wait for games, and laugh at people's misfortunes on the fields of justice.
"The Martians are attacking!"
"Lemme tweet this. '#datAss, @Marsean's place"