NECK-DEEP

{adv.} or {adj. phr.} 1. Very much; deeply; having a big part in. * /Johnny was knee-deep in trouble./ 2. Very busy; working hard at. * /We were neck-deep in homework before the exams./ 3. Getting or having many or much. * /The television station was knee-deep in phone calls./ Compare: UP TO THE CHIN IN.