Commercials should have internal logic

At issue: the stupid Cadbury ad with that handsome boy who looks like Joel Plaskett. Why do the two girls go into the chocolate shop? When he offers them chocolate they quickly demure... "Oh no! The beach!" Why the HELL are you dumb bunnies in a chocolate store if you don't want chocolate? It's not like they are acting like he is a friend of theirs with whom they simply had to share the news. And it's not like they seem the type to find him that attractive that they had to stop in even with no intention of buying anything.

There is no internal logic and it freakin drives me NUTS!