Macintosh
The basis of the Macintosh computer was Apple’s Lisa which was released in 1983. This was the first system to utilize a GUI or Graphical User Interface. The first Macintosh was released in 1984.
Manta Rays Pee
Manta Rays have no external organs for urination, therefore they release the urine from their pores
Marathon Dancing
In Reno, Nevada staging a marathon dance is illegal, although posting a notice on a fire hydrant about illegal dance marathons is not.