Pronounced Six Seventeen. Originated in 2005 from a Organization named Team Dans. A member was once ask what time was it and the member replied 6 17. From then on 617 was used in place of the word Sickening since they sound the same. 617=Sickening
a day where a bunch of young teenagers (13/14) go to someones house, get completly trashed, take their shirts off, eat frootloops, and drink hypnotiq. its a yearly tradition and can never be broken. hot girls hook up with hot older boys.
"yo its 617 tommorow, what should i wear"
"oh trust me, the clothes come off pretty quickly"