After parodying Greens co-leader Russel Norman as someone who would order a "mung bean hamburger with double alfalfa", Key turned his sights on Winston Peters and the ejection of Brendan Horan by launching into a reworked rendition of "Ten in a Bed".
"Eight in the bed and Winston said "Roll over! Roll over!' So they all rolled over and one fell out ... ," the Prime Minister half-warbled, half-croaked in Peters' direction.
The latter's contribution to the debate centred on a rather bizarre tale about a thinned-down, pale-faced Santa Claus becoming a victim of the politically correct "health police".
NZ First stood right behind Mr Claus' right to be "a jolly, fat man". NZ First MPs would be hanging up their stockings and leaving St Nick something to eat which was high in sugar and saturated fat.
"Get to the punchline", interjected a bemused John Banks without realising that was it. Having engaged in a shouting match with Peters for much of the latter's speech, Banks then made the afternoon's most outrageous claim. It had been a "great" year for Act. No kidding.
"No leadership spills. No dissension. No waka jumping. And a united caucus," Banks added with pride. That is true. And will remain so unless Banks starts arguing with himself.
Going by yesterday's weirdness, such an eventuality would not look out of the ordinary.