Style question

[Leif K-Brooks]

The style guide says that a wrapped line should be aligned with where 
the wrapped part started. But what is the most readable thing to do when 
that's impossible? For instance (ignore the wrap caused by my news 
reader), where should the second variable name be wrapped to in this line?

really_really_long_variable_name = 
another_even_longer_variable_name_with_cookies