Having crabs in the pocket
Meaning: being miserly, not wanting to spend money
Having your pockets full of crabs would obviously make one rather reluctant to put one's hand in.
Meaning: nonsense, absurdities
Apparently an "acoustic orthography" (an exact sound alike) of the Ancient Greek phrase meaning to act unreasonably or nonsensically.
Having eaten one's bread
Meaning: dead or at death's door, having had one's chips
Black humour as there comes a time when one is unable to eat anymore bread (food) and the phrase is always used in the third person, past tense; ie "he had his last breads". In this manner the departed will not take offence.
Funnily enough, in English we use "bread" too, as he is brown bread = rhyming slang for dead. As is "toast", also another word for dead. What is it about bread being equated to death?