Can you prove it by the bible?
I am not “afraid of potty words.” I fear God, whose authority is behind the plenarily inspired biblical admonition “Let no corrupt communication come from your mouth.”
Yes. The so- called "F Word" and the other words that have been arbitrarily decided upon in modern times to be "profanity" , are generally Anglo-Saxon in origin, or originate in other languages unknown to the Bible authors.
So the Bible has no opinion on modern day Anglo Saxon "profanity" . We are free to decide that those words are perfectly appropriate, if we wish, just like they has previously somehow been decided by some dubious means, to not be appropriate.