An adjective describing something that is very pretty or cute but has no real utilitarian value. Something that is nice to look at but serves no other purpose.
My mom keeps buying me these foo foo ceramic statues to put on my dresser. I really wish she would stop wasting her money on them.
Usually a woman with superficial good looks due her high maintenance and extensive plastic surgery/expensive clothes/shoes. She usually has zero IQ and talks about her expensive jewellery and/or gossiping about other people. They are usually spotted at chi-chi high class events mingling because that's mainly their job scope!