Larva

[Tanya Shivari]

The thing that comes out of insects after they make mad passionate love.

[Cami]

A huge, often steaming piece of [faeces] which resembles a larva.

[Dave Paprocki]

a form of an insect or an animal such as a frog that has left its egg but has not yet developed into a pupa or adult insect or animal

[Luis Fok]

The active immature form of an insect, especially one that differs greatly from the adult and forms the stage between egg and pupa, e.g. a caterpillar or grub.