1. An illusion.
2. A fluke of bad lighting.
3. Irreconcilable confusion.

The metaphor originates from an image of a dress which gained instant internet notoriety because the lighting in the photograph caused the dress to appear unquestionably deep-blue & black to many viewers, and obviously white & gold to many others. The dress was actually gold and white, but the human eye's perception of the shades often causes misinterpretations.
1. An amputee may still feel the missing limb, but it is a blue dress. The senses betray.

Pedestrians were in awe while viewing a hole to the center of the Earth in downtown Manhattan. They knew it was a blue dress - a sidewalk painting that used perspective to trick their eyes- but it was incredible.

The advertisement for the fast-food hamburger was a blue dress. The burger looks completely different in reality.

2. Her date's appearance was a blue dress. He looked beautiful in white-light, and frightful in dim light.

3. The comedy act "Who's on first" is a blue dress. Few people even try to understand.
by OneMaleHuman April 27, 2015
My sister won't believe her husbands cheats until she sees the blue dress.
by POAndrea February 6, 2008
What ends up getting you caught.
Used because that's what tied Billy Clinton to gettin head from Monica, they found his sperm on the dress
That's the little blue dress.
by Lee October 26, 2004
The sexiest dress uniform in the entirety of the military worn proudly by members of the United States Marine Corps and envied by all. Who are the Marines you ask? The few, the proud, the baddest motherfuckers available, who you call when it absolutely must be destroyed overnight.

Oorah & Semper Fi.
Girl one: Yea, my man is a Marine and he wears dress blues..... feel free to be jealous.
Girl two: *is extremely jealous because she realizes her civilian boyfriend will never be a hot Marine in dress blues or digigreens and responds by whimpering*

<p><a href="http://media.photobucket.com/image/dress%20blues/carrancofg/dress%20blues/mafiame.jpg?o=84" target="_blank"><img src="http://i139.photobucket.com/albums/q298/carrancofg/dress%20blues/mafiame.jpg"></a></p>
by A.McGee September 25, 2008
the dress is indeed blue and black. if you see different, your wrong :)
there is a picture of a dress going around the internet. some see gold and white, others claim they see black and blue.
"Hey! do you see white and gold on the dress?"
Me: "NO. I see a blue and black dress.
by hermione.granger.tf September 24, 2020