A otherwise normal mustache that somehow manages to do nothing but make its owner look seedy.

The phenomenon of having to come out as bisexual to the same person/people repeatedly because they assumed or hoped that your sexuality was a "phase." Refers less to the holiday and more to the 1993 Bill Murray comedy film in which the main character experiences the same day over and over.

Funky looking mustache common among male porn stars

having a moustache that resembles Ron Jeremy's, world known porn star.

ill-advised moustache resembling a moustache a porn star would have.

The pornstache crosses many cultures. The Pornstache is a warm welcoming and inviting look for non sexual settings, but sometimes sexual ones too.

A specific individual wearing aforementioned pornstache.