"No Manches!", which literally translates to "Don't Stain!", is arguably the most popular slang phrase used in Mexico. The phrase derived from "No Mames!," which translates to "Don't Suck!," and "No Manches!" evolved as a more mellow way of saying the same thing.
But what does it really mean? We use it to emotively say "No Way!"
So when we were brainstorming the name for our latest concept, which initially is a line of salsas but is part of a bigger ongoing project, we all agreed that "No Manches!" or "No Way!" fit perfectly to describe it.