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1.
Not as is used when someone says something either really stupid or a total lie.
Jim: Dude, Megan Fox's thumbs are so hot.

Jeff: Not as.
by dcruwys February 03, 2010
 
2.
last name for man with many penis that are under 1 inches.
"Nick Notas has the ultimate amount of 50 .5 inch penises"
by Nick October 21, 2003