Wiktionary
adv. (context postpositive slang vulgar English) To a great extent or degree; very.
Usage examples of "as fuck".
He may not have been much for trim, but he sure as fuck wasn't no fuckin' fruitfly.
He may not have been much for trim, but he sure as fuck wasn’.
In that moment, he's cool as fuck: he's a secret agent, a maverick detective, an assassin, a terrorist.
If he keeps it up at this rate, in another four months they'll have a positive statistical correlation that will convince even a jury of his peers that he's guilty as fuck –.
You and your uppity-mobile and your image and you gotta have a smaller fucking phone than the next guy because I'm telling you, honey, you sure as fuck don't have a bigger dick!
What a wondrous place this was - crazy as fuck, of course, but adorable to the tiniest degree.