Internal Controls
  
This is not about holding in that bad Thai dinner until you get home.
Instead, "internal controls" refers to the hopefully-careful tracking of beans (and dollars) inside of a company.
What controls are exerted on employees who have expense accounts? Are they spent for things that the company actually needs? Or are they buying bath toys and beer hats?
Internal controls are the domain of the CFO, and then outside auditors who typically spot-check a meaningful percentage of the transactions to be sure that the $88.73 paid to WallyWorld was, in fact, an office computer repair expense, and not 14,000 of those colored, plastic Easter eggs.