A  man walks into a doctors office and puts a note on the table in front of the doctor. The note says: ‘I can’t talk, help me!’. The doctor thinks for a while and says to the man: ‘Put your dick on the table here.’ The man thinks this is a bit weird but does as the doctor said anyway. The doctor takes a rubber hammer (which is usually used to test someone’s reflexes) and hits the poor man’s dick with it as hard as he can. The man cries in great agony: ‘AAAAAAAAAAAAAAAAAAAAA…..’ and the doctor just says: ‘Good, come again tomorrow and we’ll learn B!’