A gynecologist, while examining his newest patient, is unsure how to broach the subject of a rather uncomfortable observation that's been nagging him throughout the exam. Finally, he advises her that she possesses the single largest vagina he's seen during his entire career.
Naturally, the young woman, who is in excellent health and quite fit all told, is shocked.
"Well," he suggests, "If you don't believe me, why don't you have a look for yourself when you get home? Just remove your clothing, place a mirror on the floor, straddle it and see for yourself."
She finds the entire idea preposterous, naturally... but as the time passes on her way home, she begins to wonder if her doctor might not be right after all. And so, somewhat troubled, she locks her apartment door behind her, goes into her bedroom, and brings a full-length mirror out into the living room. Stripping nude, she places one leg on either side of the wide mirror, bends forward slowly --
-- and just then, her boyfriend and several of his buddies burst through the front door, intent on watching the game.
"Holy shit!" he exclaims. "What the hell are you doing?!"
"Um... I..." she stammers, searching for an explanation. "I was... exercising!"
He seems puzzled, but finally shrugs. His friends' faces are still etched in horror. "Well, okay." he shakes his head. "But Jesus, be careful and don't fall in that hole!"