gistfile1.rb

[root@cramp ~]# cat wtf.rb 
#!/usr/bin/ruby

why_the_fuck_not = 'srsly'

def wut(something)
  puts why_the_fuck_not
end

wut "heh"
[root@cramp ~]# ./wtf.rb 
./wtf.rb:6:in `wut': undefined local variable or method `why_the_fuck_not' for main:Object (NameError)
	from ./wtf.rb:9

[root@cramp ~]# cat wtf.rb

!/usr/bin/ruby

Why_the_fuck_not = 'srsly'

def wut(something)
puts Why_the_fuck_not
end

wut "heh"
[root@cramp ~]# ./wtf.rb
srsly

fml