Thingy? Really? You are on a sex story sight and you refer to the penis at "thingy"? What are you, 12 years old? Cock, dick, johnson, dong, rod, shlong, even love stick or salami but never "thingy"! You gonna talk about sex, use the right words.
To answer your question, my cock is named Rutherford, after President Hayes. A long ago ex-girlfriend named it that and it stuck. Her pussy was referred to as Lucy, President Hayes's wife. I have no idea why. I am sure we had been drinking and thought it was funny.