A flat-chested young lady

A flat-chested young lady goes to Dr. Smith…

…for advice about enlarging her breasts.

He tells her, “Every day when you get out of the shower, rub the tip of your breasts and say,
“Scooby dooby doobies. I want bigger boobies.”

She did this every day faithfully and after several months,
it worked! She grew great boobs!
One morning she was running late and she was on the bus when she realized she had forgotten her morning ritual.

At this point she loved her new boobs and didn’t want to lose them, so right in the middle of the bus–“Scooby dooby doobies.
I want bigger boobies.”

A guy sitting nearby asked her,
“Do you go to Dr. Smith by any chance?”

“Why, yes, I do. How did you know?”

“Hickory dickory dock