How scary! I'm glad you became more aware, and were able to safely avoid this situation.
There could have been a lot of scenarios that triggered your memory of those events, the arrangement in which your group was seated, particular behaviors or words spoken, etc. It is possible that you were not actually suggesting that anyone play RR, but that you were merely repeating the phrase, as if you yourself had just heard it said. (just a suggestion, I have done this with a particular phrase before)
I think you did a great job of handling the situation! Thank you for sharing.