An individual with an unusually large head and awkwardly shaped pear like body who is extremely sheltered by his/her family. This person normally makes ridiculous statements such as “Say guys, I can swim across the Atlantic Ocean” and may claim things like “The fire department revenues $90 billion a year”. When the Martian isn’t making these kinds of statements you may find them attempting to fit in by licking windows or going for midnight swims in January. They most often travel in packs to mimic normal human relationships but when they come in contact with humans their social disabilities quickly rise to the surface.
As a question:
Did that fucking Martian just lick that window?
As a comment:
That guy is mother fucking Martian!
Tim: Hey Dave, I was at your store the other day and I saw this guy taking all the milk out of the racks and placing them on the ground then measuring them.
Dave: Yeah, that guy comes in all the time and does that but he only ends up buying eggs.
Jeff: I have to clean up all that shit when he leaves, that fucking Martian never puts his shit away!!