He insisted that he hadn't called Wheeler a dingo, but had merely compared him to one.
Indeed, he had described last year's appointment of Wheeler, a former cable industry lobbyist as "the equivalent of needing a babysitter and hiring a dingo."
Of Wheeler's dingo denial, Oliver said: "That's exactly what a dingo would say if he didn't want anyone to know he was a dingo."
He then produced a disturbing split-screen image of Wheeler and a dingo and claimed there was merely shaving keeping the two apart.
"Have you, at any time, ever consumed a swamp-wallaby for its nutrients?" demanded Oliver.
So now the comedian wants a document, signed by a zoologist, to prove that Wheeler isn't, in fact, a dingo.
Some have pointed out that Oliver's commentary on Net neutrality isn't entirely factual. There is plenty of evidence of a two-speed Internet already, not least to ensure that HBO's own shows can be watched online with reasonable crispness.
However, Wheeler's attempt to offer a touch of (presumed) humor merely fed the ravenous coyotes who write Oliver's scripts.