Reported 8 months ago
One netizen discovered that many people on a cruise ship would decorate their cabin doors with 'pineapples'. Upon sharing this first-time experience, it was revealed that the 'pineapple' stickers actually symbolize 'swinging'. Advice was given to stay away from such doors as it represents an interest in partner swapping or special parties, as reported by 'Cruisehive'.
Source: YAHOO