I'm thinking FP and Carpenter are just wearing underwear briefs below the table there.
What prompted that random thought?
My cousin works as a TV sportscaster and the entire crew wears shorts and flip flops on the set all the time, except the poor weather guy. I've heard Jim Vance at Channel 4 does the same thing (or at least he used to - with HD newscasts and the anchors moving all over the set, that might not be possible anymore)