pubic wig 

A pubic wig is a Merkin as opposed to the other defintion which appears to be a spelling mistake.

Merkins are worn on stage for nude scenes and have a very long history, being mentioned in the OED in the 17th Century

pubic wig by Simon April 4, 2003

pubic chin wig 

A beard or goatee, especially one grown by a high school age male.

"Dude, what's with the pubic chin wig?"
"I'm trying to look 21 so I can get into the hot new club."

pubic chin wig by bethany bigguns February 5, 2010

Public Wiggling 

The act of touching someone's private part in a public setting.

Last night, she got really drunk and was public wiggling at the bar.

Public Wiggling by Stojo May 9, 2014