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1. coinkydink
A coincidence, usually used in a gay sense, but will make someone laugh.
You got some booty last night too? What a coinkydink!!
by Swing May 11, 2004 share this add a video
2. Coinkydink
When one coincidentally gets a 'hard on' during a sexual experience, but said hard on is not caused by the sexual experience.
Coinkydinks are often associated with the use of Viagara.