As defined by Jon Stewart, on the April 22 2009 episode of The Daily Show with Jon Stewart:
"A terrible illness that attacks the memory and gives its victims' the balls to attack others for things they themselves made a career of...There is no known cure."

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.

Repetitive fornication with previous partners forgoing all principle purposes for initial dissolution of the relationship to begin with.

The loss of ones ability to differentiate between the events that happen at multiple Baseball/Slo-Pith tournaments through out ones career.

The outrageous and perverted sense of courage old men acquire upon realize how little they have to lose. Those diagnosed with ballzheimers can be commonly spotted groping young women in line at stores, or shouting out absurd rants at strangers.

A condition of post-coital forgetfulness that occurs when you can't remember the name of the girl you just had sex with.

An illness which attacks the memory, and the person who has it the balls to attack other people for the same things they've made careers of.

There is no known cure.