From the June Oprah, an interview with Jon Stewart:
OPRAH: You caused a media storm by calling Crossfire host Tucker Carlson a d*ck when you went on his show last year. Do you regret that?
JON; I regret losing my patience. That’s about it. But calling him a d*ck? Not really. I was calling that guy who was on that show right there a d*ck—I don’t pretend to know Tucker as a person. But I regret going on air as tired as I was and not being more articulate with what I wanted to say.