bone idle 
(also bone lazy)
adjective British
Extremely idle or lazy.I'm bone idle and far too self involved to join in anything online - unless I'm really bored and have nothing to write about....
- Basically we're bone idle and a 42-date tour doesn't appeal to us any more, so traditionally we've just played Manchester or Liverpool.
- It seems that people are too bone idle to take unwanted items to the refuse collection points, so they just leave them in the back streets.
Origin
Early 19th century: expressing idle through to the bone.