Pink flamingos and upside down pineapple

Oh Lordy.. we see pink flamingos stuck in the white rocks..all over some adult elderly communities in Florida.. right Wayne!! LOL

<p>I've never heard of pink flamingos being a symbol for swinging. An upside down pineapple is probably the most prevalent "symbol" that swingers use. But I also know a lot of people that have pineapples on stuff that are not swingers.</p>

This might sound like a stupid question, but I have heard that pink flamingos and upside down pineapple in front of your rvs( or anywhere else) means you are a swinger. I just heard this and want to know if it is true ?