[Rickasaurus]

There certainly are varying definitions of "object-oriented"-ness, just contrast C++ and Smalltalk!

[derleth]

And then contrast Smalltalk with CLOS.

(CLOS is the Common Lisp Object System. If Smalltalk is more OO than C++, and I think most people see it that way, then CLOS is ... sideways OO than Smalltalk. It's not quite on the same spectrum, but it is still OO.)