The Bengals host the Ravens Sunday after being shutout by the Colts, 27-0, a week ago.
Halloween is just around the corner so it was only a matter of time before costume parties started to emerge on social media.
The joint training camp practices the Ravens and 49ers held this past summer were seen as a boon to both teams, who loved the live competition against players wearing another uniform for a change.
Cincinnati came to Baltimore in Week 1 and walked out with a 23-16 win. On Sunday, the teams meet again in Cincinnati in a game that will have major implications on the AFC North race.