Originates from the movie Vanilla Sky. When your f-ing a chick and you confuse her with another girl, but continue to have sex with her (usually even harder).
I pulled a Vanilla Sky last night; I was having sex with Racheal, but then I thought it was Lindsay, so I used the moves I that pleasures Lindsay. It gave Racheal a triple orgasm.
by Trip Aces January 04, 2005