Io is...

a simplistic, modern and prototype-based programming language. It borrows key concepts from Smalltalk, Self, Newtonscript, Act1, LISP and Lua. Io is easy to read, easy to debug and it's fast. It runs on linux, windows, bsd and os-x.

Io looks like...

foo := Object clone do (
  run := method(one, two,
    writeln(one .. " is soooo " .. two)
  )
) run("steve dekorte", "drunk")
 
"but it's just a lie" println