messapy derives from the words 'mess', as in "you're a mess" and 'therapy', as in the treatment of something. messapy, therefore, is the treatment of messes. Messes are usually personal in nature but can run the gamut to include just about anything.
Silvio's girlfriend is cheating on him with his sister. Jeez, they ALL need messapy.
Retardation is a term used to describe the spread of retardardation through communication. Popular in multiplayer FPS games, particularly in Counterstrike: Global Offensive.
"He spent 15 years playing online games. Now he has metapyshical retardation and cant function properly anymore!"