Brent Central MP Dawn Butler was at the heart of a Twitter storm this afternoon when she accused David Cameron of “sh***ing” all over the working class.

The Labour MP raised eyebrows when she posted: “Cameron looks like a kid whose just done a poo said a friend. Yes it does feel like he’s Sh***ing all over the working class doesn’t it”.

The tweet provoked dozens of angry responses from social media users, some of whom questioned whether her decidedly unparliamentary language was setting a good example to her constituents.

Lyuben Vachkov tweeted: “I pity that you are letting down those you represent by acting like a fool.”

The plain-speaking MP last week suggested in an interview with the Brent & Kilburn Times that her constituents would like to see her give the prime minister a new year’s “slap”.

The MP has not yet commented on reaction to her online outburst.