As Labour and Conservative MPs chewed over the news that David Miliband is to leave politics to take up a new job with a charity in New York, most spent their evenings tweeting pleasant tributes to the popular MP.
But the social network was also the scene for an astonishing Twitter fight between a Labour and Conservative MP.
Labour MP Ian Austin
And the Tory shot back, accusing the Labour MP of celebrating too hard on the "last day of term".
Conservative MP Greg Hands
The quarrel began before the announcement of David Miliband's resignation, as Greg Hands tweeted about the resignation from the front bench of Ian Mearns MP, who resigned as a Parliamentary Private Secretary to Ivan Lewis, in order to defy the Labour whip and vote against the Jobseekers Bill which retroactively changed Department of Work and Pensions rules relating to mandatory unpaid labour schemes.
Several of their followers, including former Tory MP Louise Mensch expressed shock at the spat, but neither would back down.