pound of flesh

Fig. a payment or punishment that involves suffering and sacrifice on the part of the person being punished. (*Typically: give someone ~; owe someone ~; pay someone ~; take ~.) He wants revenge. He won't be satisfied until he takes his pound of flesh.

if someone demands their pound of flesh, they make someone give them something that they owe them, although they do not need it and it will cause problems for the other person His boss, demanding his pound of flesh, made him come into work even though his daughter was seriously ill.

A debt whose payment is harshly insisted on, as in The other members of the cartel all want their pound of flesh from Brazil. This expression alludes to the scene in Shakespeare's The Merchant of Venice (4:1) where the moneylender Shylock demands the pound of flesh promised him in payment for a loan, and Portia responds that he may have it but without an ounce of blood (since blood was not promised). [c. 1600]