Specifically, this doesn't seem like what you intended :)

Example:

```
>> asdf
NameError: undefined local variable or method `asdf' for main:Object
        from (irb):2
        from /home/jls/.rvm/rubies/ruby-2.1.1/bin/irb:11:in `<main>'
>> puts(asdf=true)
true
=> nil
>> asdf
=> true
```