(Noun) An event to which to you have invited more than one sexual partner potential.
*You must ensure that the love interests don't know which one of them you like more (The 1st blind).
*Equally you yourself should be unaware which one you actually preference more (The 2nd blind).
Results are highly successful for ending up with one person at least on a given night due to jealousy created.
H: So what happened last night?
M: Ended up with Maria.
H: Pulled a double blind with her and Katie.
M: I see... smarmy bastard.
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 double blind!"