After a few years of married life, a man finds that he is unable to perform. He goes to his doctor, and his doctor tries a few things but nothing works. Finally the doctor says to him: "This is all in your mind" and refers him to a psychiatrist.
After a few visits, the shrink confesses: "I am at a loss as to how you could possibly be cured." Finally the psychiatrist refers him to a witch doctor.
The witch doctor says: "I can cure this." He throws some powder on a flame, and there is a flash with billowing blue smoke. The witch doctor says: "This is powerful healing, but you can only use it once a year!
All you have to do is say '1-2-3' and it shall rise for as long as you wish!"
The guy then asks the witch doctor: "What happens when it's over?" The witch doctor says: "All you or your partner has to say is '1234' and it will go down. But be warned; it will not work again for a year!"
The guy goes home and that night he is ready to surprise his wife with the good news. So, he is lying in bed with her and says: "1-2-3" and suddenly he gets an erection.
His wife turns over and says: "What did you say '1-2-3' for?"