A small but very uncomfortable pine or pike that has been lodged in between ones shirt and skin. Usually of the plant decent and are a lot of the time, discovered during sleep or slumber.
After John woke up an a sense of panic and after ripping off his sweat shirt and throwing it across the room, resulting in the zipper of the sweat shirt hitting him in the face. Soon he discovered that the culprit for his nighttime attacker was but a Pokey Stabby