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when you fall asleep or pass out after receiving a facial from your husband, boyfriend, dad, brother, priest or whatever the case may be to find it has hardened to a shell and you are unable to open your eyes or breathe through your nose
I'm going to kill my brother-in-law he gave me a crusted mummy after I passed out at his wedding reception.
by dingleberrydave April 16, 2011
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