The act of scratching a friends head, usually when they are depressed, drunk, or high. There is a rumored second G Spot on one's head which can be stimulated through the act of head scratchies, and therefore should be something not done in public.
Nikki: I've been feeling pretty down since I found out I was pregnant, can you give me head scratchies?
Erin: Sure thing, you better pay me back though!
Erin: Sure thing, you better pay me back though!
by prepsterbitchezz February 24, 2011