Friday the 13th was also noteworthy in the holidays and events category on Facebook, while Instagrammers talked about Art Basel.
Users on both platforms focused on a galaxy far, far away, as Star Wars dominated the entertainment category on Facebook, joined by Eddie Murphy and Mariah Carey, while people on Instagram chatted up Yoda, Saturday Night Live and the Golden Globe Awards.
Finally, in the food and drink category, Facebook users chased down the Big Mac with champagne, while Instagrammers took a more sophisticated approach, firing up their fondue pots.
Facebook IQ measured subjects that drove disproportionately high volumes of discussion on both social platforms, marking the latest in a Facebook-Adweek Hot Topics monthly series that began in 2015.
Check out the data-based graphics below to learn more about recent, topical social trends: