"Six Foot C#@T" joke

Bob was driving home after a day at the construction site; over the Golden Gate Bridge at about 90mph.
Wouldn't you know a cop jumped out and clocked him with radar. Bob pulled over like a good citizen; recalling Rodney King and recent illegal alien incidents.
The cop walked up to the window and said, "You know how fast you were going BOY?" Ignoring Bob, the officer continued, in his normal charming fashion, "That's speeding and your getting a ticket and a fine!"
The cop took a good look at the young bob and said, "You don't even look like you have a job! Why I've never seen anyone so scruffy in my entire life!"
Bob said, "I've got a job! I have a good, well paying job!"
The cop leaned in the window, and with the smell of day old donuts on his breath, said, "What kind of a job would a bum like you have?"
"I'm a cunt stretcher," replied Bob.
"What you say, BOY?!!" asked the patrolman. "A cunt stretcher."
Of course the cop asked, "What's a cunt stretcher do?"
Bob explained, "Girls call me up and say they want to be stretched so I go over there and start with a couple of fingers, then a couple more, and then one whole hand, then two. Then I pull them farther and farther apart until it's six feet across."
The cop, absorbed with the images in his mind, let down his guard and asked, "What the hell do you do with a six foot cunt?"
Bob nonchalantly commented, "You give it a radar gun and stick it at the end of a bridge!"