This funny question has been bugging my mind all day, trying to sell a token that landed in my wallet, which I never worked for, bought or earned,
I doubt you can sell those tokens.
Most probably, they are worthless tokens that have't been listed on any exchange and can't be traded at all.
my friend was a victim to this act today and lost all valuable tokens in his wallet,
I'm not sure I am getting you correctly.
Your friend tried to sell the tokens that have been received freely and then lost all his tokens. Am I getting you correctly? If so, why do you want to do the same thing?