Noun

The act of replacing your bedsheets with cobblestones, and sleeping on it
I asked my doctor why my back hurt so badly. He said it was because I was grabblefluffing too often.
by AntMouse July 8, 2014
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When your pillow feels like a stone and you can't sleep
Friend 1: Yo dude you look tired
Friend 2:Yeah, i slept on grabblefluff last night
by NukeiSenpai July 14, 2014
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