"Just Fred" joke

A local law enforcement officer stops a car for
traveling faster than the posted speed limit. Since
he's in a good mood that day he decides to give the
poor fellow a break and write him out a warning
instead of a ticket. So, he asks the man his name.
"Fred," he replies.
"Fred what?" the officer asks.
"Just Fred," the man responds.
When the officer presses him for a last name, the man
tells him that he used to have a last name but
lost it.
The officer thinks he has a nut case on his hands but
plays along with it.
"Tell me Fred, how did you lose your last name?"
The man replies, "It's a long story so stay with me.
I was born Fred Dingaling. I know, funny last name.
The kids used to tease me all the time. So I stayed
to myself. I studied hard and got good grades.
When I got older I realized that I wanted to be a
doctor. I went through college medical school,
internship, residency, finally got my degree so was
Fred Dingaling, MD.
After a while I got bored being a doctor so I decided
to go back to school. Dentistry was my
dream. Got all the way through school, got my degree
so I was now Fred Dingaling, MD, DDS.
Got bored doing dentistry so I started fooling around
with my assistant. She gave me VD. So, I was
Fred Dingaling, MD, DDS with VD. Well, the ADA found
out about the VD so they took away my DDS so I was
Fred Dingaling, MD VD. Then the AMA found out about
the ADA taking away my DDS because of the VD,
so they took away my MD leaving me as Fred Dingaling
with VD. Then the VD took away my Dingaling so now
I'm just Fred."
The officer walked away in tears laughing.