Winston Peters’ final day as Acting Prime Minister has seen him use sizeist language in the debating chamber.

After Tracey Martin announced that Pauline Kingi had resigned from the Wally Haumaha inquiry, National members made several interjections while Martin and other MPs were speaking.

Speaker Trevor Mallard rose and objected to the noise, during which time one National MP shouted something out.

As Speaker Trevor Mallard warned the member, reported to be Gerry Brownlee by Newshub, Peters can be heard saying “Throw fatty out”.

The comments were picked up on social media, with many users expressing their shock at what Peters had said.

So Speaker Quacker hears things from the opposition (silly little girl) but doesn’t hear things from the govt (throw fatty out)@TritonHearing you might need to make a house call https://t.co/TdGkmKni53

— TeKky ⚠️🚾 (@TeKnoman1969) August 1, 2018

You can clearly hear Winston shout “throw fatty out”. If the National Party had said this we would never hear the end of it, so what makes NZ First different!? Since when did body shaming become the norm? Or has fatism become a fetid feature of Winston’s Facism? #nzpol https://t.co/LC8ZbwXL0N

— Andrew Mahoney (@AndrewMahoneyNZ) August 1, 2018

Another lifetime ago I drove taxis overnight for about 10 years, so forgive me if my tolerance of smart arse drunks isn't what it used to be, but Peters is just a complete prick.https://t.co/QDjzNsuaWK

— Allan Buxton (@RamjamNZ) August 1, 2018

The story has since been picked up by UK newspaper The Guardian.