Bridal Shower Cake

Okay, here is the full top view of the teaser I posted two weeks ago.

If not for the title, I bet you would have a hard time figuring out what this cake was about. With a puzzled look, my son said the girl is riding a surf board (????), my sister couldn't comprehend the design either until I told her it was for a bridal shower.

My sister-in-law's officemate requested for a much naughtier cake. I refuse to do so with the presence of kids in the house. This is what we compromised to do. Do you get it now?