About two days ago an elderly man, not very neatly dressed and not so nice smelling came into our shop with a prescription for Viagra 50mgx2tabl. We don't have it in stock so I informed him that we can provide it for him for the afternoon. He said: what? louder!I can't hear you! I repeated that he would have to wait for the drug for about six hours. He said: no, I can't wait. And was gone. Should I become suspicious?