The French midfielder was upset with the way in which Arsenal were defeated by Stoke City today.
Arsenal's inconsistent form continued today as they fell apart at The Britannia against their perennial bogey team Stoke City.
They conceded a ridiculous goal after 19 seconds from Peter Crouch, before goals from Bojan and Jonathan Walters also helped them on their way to three points.
Arsenal forged something of a mini comeback in the second half. Goals from Santi Cazorla and Aaron Ramsey appeared to have them back in the game, but once Calum Chambers saw red the game was over.
It was a poor and naive performance from Arsenal and despite their little comeback late on they struggled and deserved to lose the game.
And Mathieu Flamini has now had his say on the matter, being quite harsh in his personal assessment of the performance:
"[We can't defend like that], we have no excuses. We came here and wanted to come back with the three points, especially when we were coming back from a good run of games, but today we did not start the game well at all.
"We conceded a goal after  seconds and after that we had an opportunity to come back into the game but we couldn't score. We are very upset with ourselves and very sorry for our fans, who travelled here.
"Our mistake was to concede a goal stupidly and too early in the game, after it's difficult when you're 3-0 down. Like I said, the positive thing was that we didn't give up but once again we're really sorry to the fans who travelled here today."
An honest assessment of the game from Flamini, who realises that the fans will be upset with yet another setback from Arsenal.