canary killer 

When tossing salad, your mate rips loose a fart.

While licking my girl's taint, she hit me with a canary killer, right in the mouth.

canary killer by Woodbilly December 2, 2011

Canary Surprise 

To puke, poop, then cum on ones chest or stomach resulting in a concoction that resembles bird poop.

Carl gave Sally a Canary Surprise that she has always wanted.

sex, actions, perverse, nasty, hot carl

Carl gave Sally a Canary Surprise that she has always wanted.

Canary Surprise by lolgadget January 8, 2010

canary in a coal mine

The thankless task of being the first one to take a hit, from the practice of coal miners of bringing down a caged canary to see if there's dangerous gas below

I don't know if this alleyway's safe, and I ain't no canary in a coal mine.

canary in a coal mine by Nick Cusa September 20, 2006

Canary Day 

A Canary Day is a colloquial expression for a day of immense slothfulness, rest, or otherwise inhibition to perform the daily duties and routine of ones life. Often it is associated with drug use, abnormal sleeping schedules, and containment in a closed space for the entirety or majority of the day.

"I just had a 'Canary Day' week. I was so stressed from last week's work that I just couldn't focus on anything this week!"

Canary Day by Jason Michael December 28, 2005

Canary Trap 

a method for exposing an information leak by giving different versions of a sensitive document to each of several suspects and seeing which version gets leaked.

The government needed to find their employee leaking information to the media so they setup a canary trap by giving each suspected employee a slightly different story.

Canary Trap by Tyson.Mason.1983 August 29, 2019

Canary Day 

Not doing anything for a day or for consecutive number of days

I just had a Canary Day weekend.

Canary Day by Phil Iverson November 28, 2005

canary in a goldmine 

A little booger that creates a whistling sound when breathing through your nose.

He had a canary in a goldmine and the noise kept me up all night.

canary in a goldmine by skychair September 12, 2010