madder do ee, madder do ee fuk
A Cornish way to say who even cares, it's not worth it and you're too angry to do anything
'Madder do ee, madder do ee fuk' after getting grounded again
'Madder do ee, madder do ee fuk' when his mom made him clean his room
'Madder do ee, madder do ee fuk' after his teacher called him out in class