HAHA AJA!
you think you're funny but your brain short-circuits and instead of saying 'i'm just kidding' you say 'aja' like you're from another planet
'I just passed my math test!' HAHA AJA! 'I'm just kidding... I failed... but I passed my English test.'
'I just bought a house!' HAHA AJA! 'I'm just kidding... I borrowed money... I also borrowed food.'
'I just won the lottery!' HAHA AJA! 'I'm just kidding... I almost won... I also almost cried.'