Ultimately this should come down on wether harm is made or if the societal impact is not accepted.
To take your example, explaining face to face to the person how you imagined them when masturbating could bring punishment depending on how they take it or if it impacts them in problematic ways.
To take your example, explaining face to face to the person how you imagined them when masturbating could bring punishment depending on how they take it or if it impacts them in problematic ways.