Top Definition
the ring of period blood around the mouth of a female, especially noticeable on the upper lip; most commonly left after having vaginal intercourse while the female is menstruating and then pulling out prior to ejaculation in the female’s mouth, leaving a “blood mustache.”
She told me to pull out so I could cum in her mouth and I gave her a blood mustache.
by Marty Farrington June 20, 2007
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