n : The Robsta is the coolest stud on the face of the earth. Beware, massive amounts of coolness and awesomeness protrude from this fellow. he is the original Robsta. all other Robstas are fakes and frauds. Trying to achive his amazing stature, only to fail horribly.
adj : A word used to describe the coolest of cool. Only ONE can be dubbed "The Robsta". ie: ME.
Random Rob: OH MAN DATZ SO KEWLS I WISH I WUZ LIEK U!
Me: I know, but you can't sorry.
Random Rob: OMGWTF:KILLSSELF:!!