Because he’s sounding just a little bit self-conscious on the subject:

At his 100th-day town hall meeting in St. Louis Wednesday, President Barack Obama took direct aim at the anti-tax “tea party” demonstrations that have cropped up over the last month and took a veiled shot at the Fox News Channel, the cable news network closely associated with the protests.

"Those of you who are watching certain news channels on which I’m not very popular, and you see folks waving tea bags around, Obama said, “let me just remind them that I am happy to have a serious conversation about how we are going to cut our health care costs down over the long term, how we are going to stabilize Social Security."