Conservative Party chairman Grant Shapps defended changes to housing benefit - including the so-called Bedroom Tax - by saying that his two boys share a bedroom.
But Sky News political producer Vincent McAviney tweeted to Mr Shapps suggesting that if it was true that he lived in a five-bedroom house, his children would not need to share a room.
George Osborne has accused the Government's welfare reform critics of talking "ill-informed rubbish."
Find out more about the raft of changes to the welfare benefits system that began to come into force from the 1 April.
The government has been forced to defend its changes to the benefits system after prominent church leaders claimed they were 'unjust'.