A more proper term to describe a professional bullshitter. One who brags constantly and unnecessarily. "Bovine" referring to cattle (i.e. Bull), and "Scatologist" (one who analyzes excrement).
Bill: "What this I hear about you and Tom getting it on last night?"
Mary: "Don't believe everything Tom tells you. I asked him to gave me a ride home. That's all. He's just BSing you."
Bill: "Now you wouldn't be accusing good ol' Tom of being a bullshitter, would you?"
Mary: "No, let's just say that Tom is a Bovine Scatologist."
Someone who studies the physiological, pathophysiological, anatomical as well as politico-socioeconomic characteristics of the malescrotum.
While examining my inguinal canal prior to hernia repair surgery the nurse examined and manipulated my ball sack so closely and delicately that she must have been a scrotologist.