"Well mama we aint got an ox in the ditch but we sure got some heifers in one"

An ox in the ditch refers to a task which can’t be postponed, a phrase derived from Jesus’ response to the Pharisees when questioned about performing miracles on the Sabbath day:

'Which of you shall have an ass or an ox fallen into a pit, and will not straightway pull him out on the Sabbath day?'  (Luke 14:5.)