White worms

Thanks to my mom who showed this strange behaviour to me one morning. :-)

These are Fungus Gnat larvae, they live in moist organic matter, accumulations of thatch or fallen leaves.

Masses, sometimes in relatively thick chains up to several inches long, can be found on sidewalks, driveways, or in lawns. If disturbed, the larvae will disperse in different directions. They are harmless.

The rarely seen adults are 2–5 mm long and are important pollinators that can help spread mushroom spores as well as plant pollen.

Info Source: http://pest.ca.uky.edu/EXT/timelyarc.html
http://en.wikipedia.org/wiki/Fungus_gnat