When a minimum of two people talk on Skype (or Google+ for the more technologically advanced) to smoke marijuana at the same time, and share the effects of their smoking experience.
This term can be used as a noun (a skype spliff) or a verb (to skype spliff).
Skype Spliff success:
Matthias: Hey man do you want to Skype Spliff?
Paul: Sure! I was about to smoke anyways!
Skype Spliff fail:
Matthias: Hey man do you want to Skype Spliff?
Edward: Sorry man I have to read a 300 page book about the AmericanConstitution for tomorrow.
"How did computers start? Well someone built a box, I think, and then a wizard spluffed into it and made it magic, and that's probably how technology works, right?"