gistfile1.txt

[1] (pry) main: 0> class Hello
[1] (pry) main: 0* end  
=> nil
[2] (pry) main: 0> Hello.singleton_class
=> #<Class:Hello>
[3] (pry) main: 0> require 'mult'
=> true
[4] (pry) main: 0> Hello.singleton_class.actual_class
=> #<Class:#<Class:Hello>>
[5] (pry) main: 0> Hello.singleton_class.actual_class.actual_class
=> #<Class:#<Class:Class>>
[6] (pry) main: 0> Hello.singleton_class.actual_class.actual_class.actual_class
=> #<Class:#<Class:#<Class:Class>>>
[7] (pry) main: 0> Hello.singleton_class.actual_class.actual_class.actual_class.actual_class
=> #<Class:#<Class:#<Class:Class>>>
[8] (pry) main: 0> Hello.singleton_class.actual_class.actual_class.actual_class.actual_class.actual_class
=> #<Class:#<Class:#<Class:Class>>>
[9] (pry) main: 0>