Losing my common sense

I was hanging out with a friend in a coffee shop and went to the toilet only to be confronted by ad featuring a local female bosomy celeb promoting the latest Mitsubishi model. I came back annoyed - she was stupid, classless and had nothing to do with the brand. I made a comment to that effect. My friend smiled and only said this "I do not understand why they would put an ad featuring a bosomy woman in the ladies' loo"... I am losing my common sense.