So hung-over that neither one of you remembers the other one's face, even though you slept with them last night. Also applies to "don't want to remember” and denial scenarios when confronted by friends about it.
"It's really funny to me that our friend hookup ended up in a doubleblind!"
The condition of not being able to distinguish between colors any more distinct than the 8 colors found in the original Crayola Crayons 8 pack.
This is not a disability in the same way as color blindness(though that can be part of it), it is more of a lack in vocabulary or interest.
This condition is found mostly in men, and can be spotted when they refer to teal as green, tangerine as orange, or azure as blue.
Usage:
(in traffic)
Boyfriend: "Hey look over there, that guys picking his nose."
Girlfriend: "Where?"
Boyfriend: "In that red car."
Girlfriend: "That car is burgundy."
Boyfriend: "Sorry I'm Crayola blind."