porn moustache 

aka porn 'stash

the close and neatly trimmed moustache not extending beyond lips word by adult film actors, especially Ron Jeremy

Buck told friends he was an actor, but they could tell he was only in stag films because of his telltale porn stash.

porn moustache by chromedome December 7, 2003

Porn-star Moustache

A type of moustache which resembles a side-ways C with the points pointing downwards. Sometimes it only points down slightly. However, it does not point down past the mouth. The moustache does not cover the Common with porn stars, and also associated with policemen from the 70's. (see Beastie Boys music video for "Sabotage")

Why do all the cops in these old movies have Porn-star Moustache?

Porn-star Moustache by Troy-S May 30, 2006

Porn Mustache 

thick bushy mustache, rounded on the edges, commonly found on pornstars.
Commonly referred to as a porn stache

Jonny grew up and now can grow a porn mustache nearly as great as Tom Sellck's.

Porn Mustache by kablarghhhh August 4, 2012