Hey y'all.

This morning as my gf and I were leaving our apartment she noticed a note attached to our door that had a phone number and an upside-down pineapple on it. I've asked a few people about it and a lot of them told me that it's a signal for swingers. So I have 2 questions. 1. Is that true? 2. We are not really interested in anything like that, but I don't want to be rude. So, should we text the number and politely let them know we aren't interested or would it be preferable for us not to respond at all?

Thanks in advance for the help and hope y'all have a good Thanksgiving! (for all the non U.S peeps out there I hope you're week is going great!)