A douche stache is that half-grown in mustache that guys attain usually in junior high or highschool, although it is not limited to this timeframe. Those with a douche stache often try to grow it out, to no real results. These people often give off a vibe of "Yeah, that's right. You see this stache. You WISH you were cool enough to have this stache." But everyone sees them and really thinks "Wow. That mustache is gross. What a douche..."
that one random teen guy you knew in highschool with the slightly faded mustache aka the douche stache