Examples of the 5 Pull Double Finesse

The 5 Pull Double Finesse is a level 19 convention.

In a 5-player game with a black suit (which is a Hard variant):

The blue 1 is played on the stacks.
Alice clues number 5 to to Donald, touching two 5s on slot 1 and 2. Since this is a Hard Variant, this clue will always be a 5 Pull.
Bob sees that the pulled card is two-away-from-playable. If Bob does nothing, Donald will go on to misplay the yellow 3.
Bob knows that sometimes, when a 5 Pulled card is two-away-from-playable, it can trigger a Discharge as a 5 Number Discharge.
However, Bob also sees that Cathy has a yellow 2 on her Finesse Position, which means the yellow 3 is only a one-away-from-playable card if Bob has a Bob 1 on his Finesse Position.
Finally, Bob also knows that Finesses take priority over 5 Number Discharges (when you only have to blind-play one card). So, Bob blind-plays his Finesse Position card (as a 5 Pull Double Finesse). It is a yellow 1 and it successfully plays.
Cathy is expecting this clue to be a 5 Number Discharge and he is surprised that Bob blind-plays his slot 1 instead of his slot 3. However, this tells Cathy that this must be a 5 Pull Double Finesse. Cathy blind-plays his Finesse Position. It is a yellow 2 and it successfully plays.
Donald knows that his 5 Pulled card must connect to the yellow 1 and the yellow 2. Donald blind-plays his slot 3 card to complete the 5 Pull Double Finesse.