A black prisoner, Jebadiah, on a chain gang is singled out by the boss man. The boss man asks him if he is okay. The prisoner responds that he feels fine. The boss man notes that he looks bad and is sent the the prison doc. The prison doc, a well educated black man in his own right, proceeds to ask the slave what his ailments are.
"So whats is your problem, Jebediah?"
"I looks bad. But I feels good!"
The doc seems puzzled. He consults his medical journals and pours through the topics, ailments, and prospective treatments. "Hmmm. Looks good, feels good? No, no. That's not it. Looks bad, feels bad. No. Looks good, feels bad. Aha! Here it is!"
"You say you look bad, but feel good?"
"Yessah"
"Jebadiah, you's a vagina."