A term used to describe a person or situation that is incredibly lame and/or awkward. This is a brutal term reserved to describe only the most idiotic people/things. It is also acceptable to use "He/She is so Mario"
The term originates from Halloween where party-goers dressed as Super Mario are typcially annoying, geeky, and all around awkward for everyone in their proximity.
Lindsay: Wow, did you see that frat guy chug a beer then punch a hole in the wall?
Ryder: That is so Mario!
New Super Mario Bros. is a platform video game in the New Super Mario Bros. series developed by Nintendo for the Nintendo DS. It was first released in May 2006 in North America and Japan and in PAL regions the following month.