10% factor 

You have to be 10% smarter than the material you are working with.

Al: I can't get this thing to work.
Matt: The 10% factor has you down!

10% factor by MBaxter September 1, 2006

Ugh Factor 10 

10 - Possibly the worse thing you could do to society, you'd be better off dead.

Damn girl, you need to get a new wardrobe, that shit you wearin now is like ugh factor 10

Ugh Factor 10 by jake April 1, 2005