A person, typically an elitist nerd(manchild), who cannot accept that anyone else likes anything. Typical locust behavior involves consuming all fun for the purpose of dragging others into the cyclone of misery that is their e-peen seeking existence.

The Locust is the enemy that you must defeat in the new Microsoft's game Gears of War for Xbox 360.

a grasshopper, especially in warm regions.
borat sadieyev in the locust

1.) A type of grasshopper that periodically appears and eats all vegetation available before laying eggs and dying. It is edible.
2.) The harmless (but very noisy) periodic cicada, which emerges every 17 years. It, too, is edible.
3.)Any overly abundant and destructive or annoying entity. Not always edible.

A female who feeds off of the male population until they are barren and left with nothing then she proceeds to move onto the next guy and repeat the same process.

A city (especially New York) tourist, who despite only living there for a few months, continually tries to assert that he's a local.

Big, pissed off grasshoppers

Used to label Mainland Chinese in a foreign country that will abuse benefits and disregard local customs. They abuse loopholes in systems and give nothing back to the community they are in. Once the place is drained of its resources they will flock to another place and restart the process, just like the insect.