By Mitchell Forde There’s been a lot of smack talk between the Kansas City Chiefs and Cincinnati Bengals leading up to Sunday’s AFC Championship Game rematch. It’s gotten so chippy that politicians are now getting involved. Aftab Pureval, the mayor of Cincinnati, signed a proclamation this week to name Sunday, Jan. 29 “They Gotta Play Us Day” in his city. In the process, he took a major shot at Patrick Mahomes and the Chiefs. Not only did Pureval use the “Burrowhead” monicker that Bengals players and fans have been calling Arrowhead Stadium this week, he joked that Bengals quarterback Joe Burr…