The 65-year-old, once seen as a frontrunner for the French presidency, said the idea that his preference for certain practices highlighted in court, such as sodomy, would spur him to seek out prostitutes was "absurd."
For a second day, the court in the northern city of Lille picked apart sex parties attended by Strauss-Kahn in Paris, Brussels and Washington in a bid to uncover whether he arranged for prostitutes to attend.
Strauss-Kahn denies knowing that the women with whom he engaged in "free and friendly" sex parties were prostitutes, saying paying for sex would be too great a risk for a man at the head of the IMF, which was busy "saving the world from an unprecedented" financial crisis.
Today's proceedings began with an emotional account from an ex-prostitute, about a night in a Brussels hotel where she said Strauss-Kahn sodomised her without permission, in what she said was a clear sign he knew she was paid to be there.
The silver-haired economist, who has spoken confidently and been unflappable when questioned, lost his patience when a lawyer for the prostitutes interrogated him on the act.
"I am starting to get fed up," he said, adding people were free to disagree with his proclivities, but that he was not on trial for "deviant sexual practices.