A wet dream that could be considered a nightmare due to either the content of the dream or who the dream involved.
1. "I had a sexmare where I took it up the ass"

2. "I had a sexmare about the creeper at the office"
by Jack_Atlas January 14, 2013
Slang term for wet dream, an offshoot of nightmare.
Ugh, that was a great sexmare, though I'll have to burn the sheets...
by Hugh Lloyd October 01, 2006

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