Месье знает толк в извращениях. (Хех, как же нам в детстве такие нравились! Ну, дети тоже извращенцы).
These are Russian forbidden words. They serve not only to insult, but also to express strong emotions. These are words-parasites in the speech of some people. In a respectable society, the use of obscene language is prohibited. But sometimes people cannot contain anger or delight, if the words are not directed specifically at you, then they do not want to offend you, just an expression of feelings. Etymologically, these words mean sexual terms. But people who swear at them don't think about sex now. It is just important for them to express their too strong emotions.
Need to translate a literal meaning?