Sexy?

Few nights ago, we were all watching television when the trailer for Madonna's music video was aired. After watching for a few seconds, Shukri turned around & said "This is a sexy girl.". Our jaws dropped. Then I asked him casually "What do you mean by sexy? Why is she sexy?". HE just smiled & said "This is a sexy girl." Oh dear...is it pre-programmed in men/boys?