Double-decker, or to pull a double-decker, is when a girl is having sex with two men, whereas one is thrusting his manhood in her ass, and the other man is penetrating her vagina. Often done to completely dominate the woman, and/or a symbol of the friendship between two men.
Man Oscar, we have gots to double-decker that Sandra chick, she is too fine.
The same as economy with superior spelling
There is a recession in the econonomy due to Bush's mismanagement of the US of A