lerk

Small flying creatures that are capable of emitting lethal spore clouds. Lerks can usually be found residing in ventilation ducts, especially ones located near human quarry. While annoying on their own lerks can be quite dangerous when teamed up with their more powerful brethren, such as the fade or the onos.

someone who hangs around and doesn't pay and doesn't even offer to pay for anything
can describe more than one person(s)

To go about business in an orderly boo fashion so that one remains out of contact by all means for a substantial length of time. Consequentially a "Great White" lerk is one where the individual is out of reach for the better part of the day or multiple days.

-Verb
1. The act of lurking in a concealed manner while pleasuring oneself, i.e., masturbating, spanking it, jerking the gherkin, etc.
2. The act of lying or waiting in concealment while pleasuring oneself.
3. To exist unperceived while fondling the genitals.
Origin:
Derived from the two words "lurking" and "jerking"

Annoying little bitches found in the half-life mod "Natural Selection".

The act of being approximately 1462.7 lbs. overweight while still retaining an incredibly dense muscle mass. Lerking is also defined as the act of benching the world, while being spotted by Atlas. Those who Lerk are generally bad at walking and balancing, and tend to trip on anything and everything in their general vicinity. Lerks typically can be found masturbating upside down in playground near small children, inside Tommy Lockhart's van, or inside a vaginaboob.

Verb Lerking comes from the verb lerk which means to sneek.