a worm
Examples
To revolt is a natural tendency of life. Even a worm turns against the foot that crushes it. In general, the vitality and relative dignity of an animal can be measured by the intensity of its instinct to revolt.
Edible, adj.: Good to eat, and wholesome to digest, as a worm to a toad, a toad to a snake, a snake to a pig, a pig to a man, and a man to a worm.
Fly fishing may be a very pleasant amusement but angling or float fishing I can only compare to a stick and a string, with a worm at one end and a fool at the other.
The most beautiful fig may contain a worm.
You play with a snake and call it a worm.
Even a worm will turn.