a mustache above a womans vulva, either personally trimed/waxed on the womens mon pubis or a reference towards a man with a mustache performing vaginal-oral sex.
"Sorry honey, not tonoght. I knicked myself trimming my mustaffe"
"They havnt spoken since Micah gave her best friend a mustaffe."
"They havnt spoken since Micah gave her best friend a mustaffe."
by Honorary Stache October 05, 2011