When you and another person have a tube from anus to anus, transferring farts into each others cavities back and forth until so much stank is accumulated that when the tube is removed and the fart is released into the air, you are paralytically high from said fumes.
!!CAUTION!! These fumes may cause death like the real Auschwitz
I nearly died last night doing an Auschwitz Transfer with my homie. Incredible high though...