describing a subject that is unbeatable, but only to finish your claim that chris brown can beat it.
similar to a sentence that is interrupted by michael scott, regional manager of dunder mifflin on the office, he would state at the end of a statement, "thats what she said."
Only this time under the brown exception, a subject matter that is said indestructible, is reverted back to the all capable beat down by chris brown.
nothing beats walmart's prices...except chris brown