Dr. Smith's advise

A flat-chested young lady went to Dr. Smith about enlarging her tiny
breasts. Dr. Smith advised her, "Every day after your shower rub
your  chest  and say, "Scooby doobie doobies, I want bigger boobies."

She did this faithfully for several months and it worked! She grew
terrific  D-cup boobs! One morning she was running late, got on
the bus and in a > panic  realized she had forgotten her morning ritual.

Frightened she might lose her lovely boobs if she didn't recite
the little  rhyme, she stood right there in the middle aisle of
the bus, closed her > eyes  and said, "Scooby doobie doobies, I
want bigger boobies."       
 
A guy sitting nearby looked at her, "By any chance, are you a
patient of  Dr.  Smith's?"

"Why, yes I am... How did you know?

He leaned closer, winked and whispered, "Hickory dickory dock..."