What is the upside down pineapple mean?

The upside down pineapple has several different meanings depending on the context. In the swinging community, placing an upside down pineapple ornament or flag outside of a house is used to signal to others that the residents are swingers and open to engaging in sexual activities with other couples. The practice of using the upside down pineapple as a sign in the swinging community is not widely recognized or understood outside of that community.

In more general terms, the upside down pineapple can also symbolize welcoming and hospitality. In the past, pineapples were considered a symbol of wealth and hospitality, and turning the pineapple upside down was thought to represent sharing that hospitality with others.

Overall, the meaning of the upside down pineapple symbol can vary depending on the context in which it is used.