A rash or red area on the upper lip that appears similar to that of a mustache. Sometimes caused by dry-shaving, waxing, or some type of allergic response to something.
Guy 1: "Becky was looking so hot today, but she really shouldn't have gotten her upper lip waxed. It left a massive rash stache."
Guy 2: "Yeah, but I'd still ride that ass like a monkey on a tricycle."
Guy 2: "Yeah, but I'd still ride that ass like a monkey on a tricycle."
by Dick Shanary February 26, 2009
Get the Rash Stachemug. The inevitable rash one gets after experiencing oral delight from another, possessing an outdated facial pattern called a mustache.
- Hey baby, wanna show me your O face?
- Hell no, the stache rash you gave me last night still hurts.
- Hell no, the stache rash you gave me last night still hurts.
by youwantmystacherash August 24, 2008
Get the Stache Rashmug.