I got this one from one of my church members during the GIG:

A man was trapped in a cell with only a table inside it. But he escaped. How?

The answer was:
He rubbed his arm so that it became sore (/saw) , then he used the sore to cut the table into halves. Two halves make a whole (/hole). He jumped out through the whole and cried until his voice became hoarse (/horse). Then he jumped onto the hoarse and escaped.

The moral of the story:
Becoming a doctor is very pressurizing.