bone idle - extremely lazy by nature ( I've asked him five times to help but he hasn't lifted a finger so far. He's just bone idle.)
bone up on something
have a bone to pick with someone - you have something to complain about ( I've got a bone to pick with her.She ate all the food in the fridge)
make no bones about doing something- to do something willingly without hesitation
work your fingers to the bone - To work very hard (I've been working my fingers to the bone while you've been out enjoying yourself. Well, that's not good enough.)