It's a plug with a hole in it. What did you guys think I was talking about?
If you can't figure it out, here are some simple instructions:
[Via Product Dose via I New Idea]
Related: Quick Tip of the Day: Plug It (All) In
This is fantastic. I once electrocuted myself when I was younger after I pulled the plug out by the cord to disconnect my Sega Genesis. My entire hand turned black.
I wish they had this in the late 80s.