Dolly-Rogers Exchange

A Dolly-Rogers Exchange is a hypothetical choice involving the exchange of one highly valued item for another that one is unwilling to make. The name comes from the hypothetical sacrifice of Dolly Parton in order to raise Fred Rogers from the grave.

Rob: "Would you kill Dolly Parton to raise Mr. Rogers from the dead?"
Al: "No way would I take the Dolly-Rogers Exchange."