The thin disposable paper device provided for patrons of public toilets so their delicate ass cheeks don't touch the toilet seat which is probably full of dried urine and discharges from other people's anal boils. Can be worn around the neck and sort of looks like a vest when worn in that manner.
I had to hover above the bowl and do a bombadier because they were all out of Texas Dinner Jackets and there appeared to be some blood and feces on the toilet seat.
by Mr. Tapeworm June 2, 2006
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A work jacket or flannel that has been well worn and thoroughly beat up.
Man #1 : Why doesn't Chris get a new Carhartt? The one he has is old and dirty.

Man #2 : What, you don't like his Canadian Dinner Jacket?
by stronghands March 19, 2008
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A sleevless T shirt also known as a wife beater or guinea tee.
Uncle tony's all dressed up in his Italian dinner jacket for sunday gravy.
by garand March 7, 2011
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A wool reversible jacket, with red plaid on one side, and hunter’s orange on the other.
Look at this hoser wearing his kenora dinner jacket, must be a formal out on sabasquaw
by Therealrothman March 21, 2019
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A Haliburton dinner jacket is a blatant rip-off of the original Kenora dinner jacket: A plaid lumberjack jacket.
by Jojo Hohnson November 18, 2017
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A man's sleeveless undershirt. White, or at least once-white.

Also called IDJ or an Italian tuxedo.
Bruno wore his Italian dinner jacket to Angelo and Carla's wedding.
by Cap'n Bullmoose April 23, 2005
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Also known as a "PG Dinner Jacket".

Prince George is the largest city in northern British Columbia, Canada, and is the centre of the regions forestry industry.

Temperatures in and around Prince George can fall below -20 degrees celsius in the winter months and warm clothing is a necessity. Many of the areas inhabitants wear the classic Stanfield-made "Island Tuxedo" wool undergarment sweater in combination with a flannel or plaid outer jacket.

This flannel or plaid outer jacket has been dubbed the "Prince George Dinner Jacket" by the inhabitants of British Columbia to define it's rugged characteristic. Those who dawn it endure environmental hardships on a consistent basis. The inhabitants of northern BC wear this style of clothing on a fairly regular basis when heading in for dinner at home or out for dinner in town, hence it's title of "Dinner Jacket" emerged.

Many of those living in warmer areas of British Columbia, like Vancouver, will wear this clothing as well, and it is said they are, "Dawning their PG Dinner Jacket".
You see someone wearing a plaid or flannel outer jacket in a casual setting that does not suit it's intended use, "Hey, nice PG Dinner Jacket" or "Hey, nice Prince George Dinner Jacket, you going to go buck wood?"

It is cold outside, "Better wear the ol' PG Dinner Jacket today, boy!"

Many of those enjoying recreational activities in the vast British Columbia wilderness will not leave home without their, "Prince George Dinner Jacket".
by RoamCanada November 24, 2011
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