When one has a sex dream about someone, something, or some situation that they would never want to be involved with sexually
Greg had a sex nightmare about Kelsey last night. She rufied him while they were playing beer pong in the dream.

Jenn had a sex nightmare that she was fucking a horse last night after watching 40 Year Old Virgin.

Foard was giving it to me in the living room at my family reunion in my sex nightmare last night. Nothing worse than grandma and grandpa watching from the couch.
by ShitbagSatan August 13, 2010
1 Word related to Sex Nightmare
Top Definition
1. When you have a sexual dream involving someone that you either despise or could never imagine having sex with in real life.
1. "That was a horrible sex nightmare, I dreamed I had a lesbian fling with Price after rugby practice."
by Mysterious Animal August 13, 2010

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