an ugly mustache grown initially as a joke and to impress one's friends with the level of commitment necessary to maintain it. these mustaches often remain with the wearer far longer than they are funny and become a part of the person's "look".
Marc: No doubt, and his ironic mustache really isn't helping.
Yuppie's friend- "Oh that's a Hipster and that's actually called an Ironic Mustache!"
See great examples of an Ironic Mustache in the Hipster video "Hipster The Get Down" now on YouTube.