A man has been in hospital for a month

A man has been in hospital for a month.

One day, he’s so sick and tired of being in hospital that he sneaks out and down to the nearest pub.

He orders a beer and swallows the lot in ten seconds flat. He then orders a second beer and does the same.

Then a third and a fourth.

As he orders a fifth beer, he says to the barman, “I shouldn’t be drinking this with what I’ve got.”

The barman gasps in alarm, “What have you got?”

To which the hospital patient replies, “I’ve got no money.