public whistler 

noun. A person of glass-half-full mentality who feels compelled to whistle in public areas such as elevators, shopping malls, university campuses, office buildings, trains, etc. Usually despised by those s/he encounters, unless said person is actually good at whistling.

verb. public whistling

A guy that used to live on my floor was a real public whistler.

public whistler by Thel200ster March 25, 2007

Public sitter

A person who doesn't use a toilet seat protector or toilet paper to line the toilet seat in a public restroom.

Guy: Dude, I just found out that Matt is a public sitter!
Girl: Eww, gross!

Public sitter by Comment Poster June 16, 2008

public safety unit

a police death squad

The public safety unit took care of the street kids.

public safety unit by megamega January 13, 2009

public milk 

When one's housemates/family have irritated or wronged oneself in some way, he or she may choose to invoke "public milk" out of spite. This practice involves chugging milk straight out of the carton without telling anyone, and works especially well if one has any prexisting contagious medical conditions.

for example:

"my flatmates came home really drunk last night and woke me up, so I public milked them"

"the other day my step-sister invoked public milk, and now I have the flu"

public milk by bdcb September 22, 2012

Public Popsicle 

When you put your dick between two girls making out, and a chick on other end of you is sucking you off.

I got that public Popsicle last night from these bitches down the street, felt so good I my dick started humming the national anthem... Shit was crazy.

Public Popsicle by Cynabal2 January 26, 2013

Public Dog 

Any animal you find out in public that you hold, pet or touch. The origin and germ status of said animal are unknown to you and it is now necessary that you disinfect the infected area.

A lost dog at the beach that you hold is a public dog.

"Man I have to wash my hands after I touched that public dog."

Public Dog by Ineedagallonofpurelle August 30, 2013

public display of erection 

This is when you get an awkward boner in public. It's usually induced by some hot chick sitting next to you.

Nick got a public display of erection when Kayla sat next to him in class.

public display of erection by CowManCheeseBall September 26, 2014