Anal Cartographers 

People who map the layout and notable features of rectums.

Oprah: I had one hell of a night last night. These anal cartographers kept me up all night.

Dr. Phil: Well at least they didn't write "Here be dragons" on your map...

Anal Cartographers by PolarKingBear January 2, 2010

Anal Cartographer 

N. One who works aboard the ship of an Ass Navigator and maps the neatherworld that is the anal sphincter.

"Ahoy, Jim! Chart that cove you magnificent anal cartographer!"

Anal Cartographer by GrizzlyClaw February 1, 2006