When originally broadcast, the music that Lt. Hunter is listening to in his car is classical. On the DVD it's jazz.
The DVD states 'The following episode was mastered from the best available sources.'
At the 18:41 mark is an exterior shot of a building. At the top the words Cook County Court House can clearly be seen. Chicago is the seat of Cook County. Also, at the beginning the shields for I-90 & I-94 are paired together and in the background is the Mid City National Bank Building which is located at the corner of S. Halstead and W. Madison, in Chicago.
The title refers to slang for Gonorrhea, a common sexually transmitted infection.
At 8:28, as Henry Goldblume enters the men's room to speak with Howard Hunter, he is whistling "Pass Me By" from the 1964 Cary Grant film "Father Goose".