1. When a woman's period begins at an inopportune time.

2. When a woman's period blood comes out all clotted and chunky, and a man observes it.

3. When a woman's vagina bleeds, and somehow the blood gets on your mother.
1. I was going down on that bitch when suddenly instead of pussy juices, blood started gushing all over my face giving me a clown moustache. That's some unfortunate menses.

2. That meatball stew was some unfortunate menses.

3. My mother hates unfortunate menses, but your mom loves it.
by scorpionmintred December 28, 2003
1 Word related to unfortunate menses

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