That is a relief

The drunken wino was stumbling down the street with one foot on the curb and one foot in the gutter. A cop pulled up and said, "I've got to take you in, sir. You're obviously drunk" The wasted wino asked, "Ociffer, are ya absolutely sure I'm drunk?" "Yeah, buddy, I'm sure," said the copper. "Let's go." Obviously relieved, the wino said "That's a relief - I thought I was a cripple."