My brains are fried

Oh dear...a sure sign of age. Was talkign to my mum over the phone jsut now and was discussing soem stuff with her," Ma, its four days lah. Can't you count? Twenty-four, twenty-five, twenty-fifth and twenty-six"....

I counted like for at least 3 times. And I was sure I was right. Help!! My brain cells are dying. Wonder if its the Sony Ericsson fault!