A flat chested girl goes to see Dr. Smith about getting bigger boobs. They discuss surgery etc but the doctor tells her that there is a painless method of getting bigger breasts. He tells her "After your morning shower rub your breasts three times saying "Scoobie scoobie doobie I want bigger boobies" and they'll get larger".
After a month of doing this the girl has magnificent DD breasts and is very happy. One morning she is late for work and only just catches the bus, however she realises that she has forgotten her treatment that morning in her haste, so whispering quietly she does the treatment and the man sitting next turns and says "Are you a patient of Dr. Smith?"
"Yes, how did you know?"
The man replies "Hickory dickory dock...."