Apparently Heathcliff is a fan of some random guy. I'd say that he's the head of the Department of Sanitation, but that really wouldn't make any sense: heads of departments don't take appointments with cats. Heathcliff probably got a BJ from the chick at the desk, despite her mouthlessness (women aren't important enough for mouths), hence his happy look. Otherwise, the balding man is just pissed: the woman was his wife.
Seriously...if this were anything but that, the office would be messy as fuck to illustrate how bad at his job he was. But no. We get inter-species erotica. God bless America.