The act of ejaculating onto a portable mirror, letting the ejaculate dry into a crust, then using a razor blade to scrape up the crust into a powder, making lines and snorting it.
My nose burned a little after my first criffing attempt, but I'm glad all that semen didn't get wasted on your mom's ass like itusually does.
1) To remove the fun from a situation (especially a competitive game.)
2) Someone who disappears for the night with a member of the opposite sex and then refuses to share the sordid details of the encounter with their friends
1) oh god, he completely cliffied that game of monopoly