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1.
The phenomenon of a very sexy and strong jawline. Preferably displayed on Robert Pattinson.
"i love his profile…without his classic roman god profile there would be no jaw porn!"
by nattuggla90 June 22, 2009
 
2.
When a male's jaw is so sexy, it's as if you are watching porn.
Girl One: Have you seen Josh Hutcherson's jaw?
Girl Two: It's carved by angels. Complete jaw porn.
by JAWshhutcherson February 21, 2012