1. Species of primate, most often found near a LCD monitor and an ADSL
accessible PC. Forearms have evolved in a lengthened manner, and
right hand and fingers have evolved strangely similar to
the shape of a microsoft optical mouse. Left hand is of a different morphology, most similarly imitating the pattern of 'W,S,A,D' keys on a common keyboard.
2. CS player - says it all