"Pregnant Woman" joke

A young woman who was several months pregnant boarded a bus. Then she
noticed a young man smiling at her she began feeling humiliated on
account of her condition. She changed her seat and he seemed more
amused.
She moved again and then on her third move he burst out laughing. She
had him arrested. Then the case came before the court, the young man was
asked why he acted in such a manner.
His reply was:When the lady boarded the bus I couldn't help noticing she
was pregnant. She sat under an advertisement which read "Coming Soon:
The Gold Dust Twins".
I was even more amused when she sat under a shaving advertisement which
read: "William's Stick Did The Trick".
Then I could not control myself any longer when on the third move she
sat under an advertisement which read "Dunlop Rubber would have
prevented this accident."
The case was dismissed.