Ibn Hazm says:

211. Two kinds of people live a life without care: one kind are extremely worthy of praise, the other kind are extremely worthy of humiliation; those who care nothing for the pleasures of this world and those who care nothing for haya’, modesty.

• "Among the words people obtained from the First Prophecy are: If you feel no shame, then do as you wish". - The Prophet
  
  
• This hadith has two meanings with scholars. One of them being that if everything you do doesn't, and shouldn't, draw shame, then rejoice and do whatever you wish.
  
  This is the person of extreme praise. He or she is at a stage where societal judgements of others cannot touch them. They know the truth, they walk the truth, and feel no shame despite what people may say.
• The other being, if you've lost the concept of feeling shame for disrespectful actions, then do whatever you want, since you're already such a lost person, it doesn't really matter.