It comes from the words femme fatal and vagina.

1. A bitch whose vagina is so dry and tight, you swear it could rip your dick clean off.

2. A deadly vagina.

3. A vagina that should be either condemned or feature a warning sign.

4. Any vagina that is hazardous to your sexual health.

I really need to raise my standards. Last night I was fucking a bitch, and she had a total femme vagal. I'm lucky my dick is in one piece.
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