madder do ee, madder do ee fuk - A Cornish phrase that means why even waste your time, it's n

A Cornish phrase that means why even waste your time, it's not worth it and you're too tired to do anything about it

'Madder do ee, madder do ee fuk' after his cat knocked over his cereal

'Madder do ee, madder do ee fuk' when his friend copied his homework

'Madder do ee, madder do ee fuk' after getting stuck in a math problem