21. Pricking the potato with a fork or knife allows steam to escape during the cooking process.22. A small drop of blood, obtained by pricking the skin with a mmol / l. 23. The pricking sensation seemed absolutely real. 24. When he started pricking his ears and looking for competition, that made me feel good. 25. The pricking , he said, was frostbite, and three months later his legs were removed. 26. But standard medical tests such as pricking the skin with a pin show Hallam has no feeling. 27. So will Yale, which can salvage a season gone sour by pricking Harvard's balloon. 28. They check their levels by pricking a finger and placing a drop of blood on reactive strips. 29. The green herb being bruised and applied to the head taketh away pain and pricking thereof ." 30. By this time Prince Darling has discarded the magic ring because it was almost constantly pricking him.