lemonheads

a member of the media, with a big smiling face that indicates a mouthful of Lemonsheads, speaking with an expert or to the audience, and pretending that he/she is much more educated about the subject than he/she really is....

Don Lemon and his co-host were nodding their heads and agreeing with the global warming expert like lemonheads. as if he actually what understand the esteemed scientist was actually saying