There’s no noun that we put up bind the to here. Here, we hold the adjectival best, only this adjective is connected to no noun.
We consumption articles wish the and a before nouns, TRANSEXUAL PORN SEX VIDEOS like railroad car. The word “best” is an adjective, and adjectives do not lead articles by themselves. The adjectival Best is ill-used in a copular grammatical construction with the pinhead pronoun it.