Republican National Committee Chairman Reince Priebus waded into the Harry Reid-Mitt Romney tax drama on Sunday, calling the Senate majority leader a “dirty liar” for his accusation that Romney didn’t pay any taxes for a decade.

“As far as Harry Reid is concerned, listen, I know you might want to go down that road. I’m not going to respond to a dirty liar,” Priebus told ABC’s “This Week” host George Stephanopoulos. “If that’s on the agenda, I’m not going go there. This is just a made-up issue.”

“You’re saying youre not going to go down that road?” Stephanopoulos responded. “You just called him a dirty liar. You stand by that — you think Harry Reid is a dirty liar?”

He then went on to say his pants was on fire…