premise: open a stuck jar
hypothesis: Go a step further and use the tip of a butter stick, a bottle yop or even a flat-head screw as a prying device.        Insert the tip of the chosen object under the rim of the jar lid and lever it out. Move around the rim, inserting the tip and applying leverage, until you hear a small pop. The popping sound is the seal being broken. Once this has happened you should be able to twist the lid open with ease!