Pineapples are used as a secret way for swingers to identify each other. If you see someone wearing an upside-down pineapple badge or pin, it means that theyâre actively looking for a partner swap. An upside-down pineapple on someoneâs front porch can be seen as an invitation to join a swinger party.
Look, shes wearing a pineapple pin upside down! Lets say hello maybe we can all hook up.
Upsidedown pineapple - subtle hint of swingers looking to draw in other swingers.