Dr Smith I presume

A flat chested lady went to see Dr smith about enlarging her tiny breasts.
Dr Smith gave her the following advise " Every day after your shower rub your chest and say " Scooby doobie doobies I want bigger bobbies "
She did this faithfully for several months and it worked She grew terrific D sized boobs.
One morning she was running late and didn't have time to say the incantation so she stood in the aisle of the bus and quietly recited the mantra Scooby doobie doobie i want bigger boobies.
A man sitting nearby quiety whispered to the young lady are you a patient of Dr Smith's Surprised the young lady asks how did you know??

At this the man smiled and whispered Hickory Dickory Dock .......