Hey doctor, my problem begins when somone make fun of me ,i cannot reply to there jokes and that sarcasm or fun revolve around my head keeping me in depression , i feel scared when someone when make excess joke on me ,like cracking a joke and i cannot counter reply to them . i donot have smartness in speaking .It's like i cannot think something .. my brain stops functioning it's like that . Help me doctor as how can i be smart in speaking ,increasing my humour .. all make fun of me at any point by commenting and i cannot defend myself. Is there any brain problem?