A phrase used to catch game developer Valve's attention when encountering a bug or exploit in one of their games. This phrase is usually used when reporting very minor bugs, since Valve games are known for being very polished and bug-free. This phrase may also be used in conjunction with the phrase "Literally unplayable."

1. noun. It is the sudden feeling of an inexplicable joy one gets when something romantic or idealistic occurs.

When kilig, one may experience the following:

*butterflies in one's stomach
*heart melting
*shivers down one's spine
*irrepressible noises from one's mouth
*uncontrollable smiling
*an inner conflict between hope of something wished for and reality

Kilig may also be defined as that mountain top, floating, on cloud nine, invincible, i-could-keep-smiling, heart aching goodness and feeling which overpowers the mind's ability to think straight, act straight, breathe properly and articulate thoughts into a single comprehensible sentence.