Unexpected dissapointment. When an expected positive outcome turns out to be exceptionally negative. Refers to an awful sour tasting beer much like salad dressing, disguised as something delicious. It costs $36 a bottle, and tastes like $2 vinegar.
Last night was a real Blueberry Nightmare ....

When I finally got her pants off it was a real blueberry nightmare down there...
by ianelectro March 17, 2013
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