Here's a list of interesting words from Boing Boing and Sexoteric and Alex Harrell. Can you write an erotic romance story using one or more of these? Sure you can!
My favorite? Mammaquatia. Least Favorite? Peotomy.
Tripsolagnophilia (TRIP-suh-LAG-nuh-FIL-ee-uh) - The desire to obtain sexual pleasure from massage.
Coitobalnism (KOH-i-toh-BAL-niz'm) - Sex in the bath or shower.
Sacifricosis (SAK-oh-fri-KOH-sis) - The practice of absentmindedly fiddling with your genetalia through your pants pockets. "playing pocket pool" or "pocket hockey"
Faunoiphilia (FAW-nay-FIL-ee-uh) - An abnormal desire to watch animals copulate.
Brassirothesauriast (bruh-zeer-oh-thuh-SAW-ree-ast) - A person who collects brassieres or pictures of women wearing them.
Paraphilia (PAR-uh-FIL-ee-uh) - A preoccupation with unusual or abnormal sexual practices.
Eunoterpsia (YOO-noh-TURP-see-uh) - The doctrine that pursuing sexual pleasure is the goal of life.
Typhlobasia (TIF-luh-BAY-zee-uh) - Kissing with the eyes closed.
Amychesis (AM-i-KEE-sis) - The involuntary act of scratching or clawing your partner in the heat of passion.
Mammaquatia (MAM-uh-KWAY-shee-uh) - The bobbing or jiggling of a woman's breasts when she walks, dances, or exercises.
Cingulomania (SING-gyoo-loh-MAY-nee-uh) - A strong desire to hold a person in your arms.
Ozoamblyrosis (OH-zoh-AM-bli-ROH-sis) - Loss of sexual apetite because your partner has wicked B.O.
Amomaxia (AM-uh-MAX-see-uh) - Love-making in a parked car.
Colpocoquette (KAHL-puh-koh-KET) - A woman who knows she has an attractive bosom, and who makes good use of its allure.
Melolagnia (MEL-uh-LAG-nee-uh) - Amorous feelings inspired by music.
Krukolibidinous (KROO-koh-li-BID-i-nus) - Crotch-watching; having one's gaze fixated on the crotch.