“It is too much to hold when you dig so deep that you're left with a hole.”
“The first rule of holes: When you're in one stop digging.”
“Remember what to do when you're at the bottom of a hole? You've got to stop digging.”
“When you are in a hole, stop digging!”
“When you find yourself in a hole, quit digging.”
“When you find youself in a hole - stop digging.”