Used in the place of "coincidence".
The people who use this word are asswipes. If you hear anyone say it, get rid of them in any way possible, preferrably one that involves intense pain.
girl: "Oh my god! We're both wearing the same jacket! What a koink-dink!"
awesome person: "Asswipe." (they then proceed to strangle her with her own jacket.)
a non-fancy way of talking about Carl Jung's idea of synchronicity:
Synchronicity is an explanatory principle; it explains "meaningful coincidences." His notion of synchronicity is that there is an acausal principle that links events having a similar meaning by their coincidence in time rather than sequentially. He claimed that there is a synchrony between the mind and the phenomenal world of perception.
A beetle flew into Jung's room while a patient was describing a dream about a scarab. The scarab is an Egyptian symbol of rebirth, he noted. Therefore, the propitious moment of the flying beetle indicated that the transcendental meaning of both the scarab in the dream and the insect in the room was that the patient needed to be liberated from her excessive rationalism.
If lets say someone was sad about the lose of a close loved one, and you spoke to them to lift their spirit, it would be very krinky of you. Or say you are hanging with your frinds and someone says something that is very clever, it would be krinky.