The act of sending via social media (most commonly Snapchat) a selfie video of oneself or a group chugging a specified alcoholic beverage without interruption, in response to which the recipients are required to send their own chugging videos or risk seven years of reasonably good sex with an endowed man or woman where something or some element is nevertheless missing, reducing it to mediocre sex (much like sex in a marriage without hall passes).

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.

To send a Snapchat video of you/your friends chugging an alcoholic beverage, prompting your recipients to reply with a chug video of their own.