What episode of Dragnet is this dialog from? And what's the context?

Apropos of nothing, but the Star Trek space hippy with the ‘guitar’, Charles Napier, went on to become the Good Ole Boy that threatened to knock Jakes’ teeth out in the Blues Brothers.

And the wife was played by Jill Banner, who for a while (possibly, at the time of this episode) was dating Marlon Brando.

She also played the mother of the mama’s boy Marine in Webb’s tour de force “The D.I.”.

Wouldn’t Joe Friday make a great Moderator, for General Questions or Great Debates?
His sig line could be Cite just the facts.