Naked Jake Gyllenhaal Bare Assed Pops a Tent

Good news for anyone left disappointed by Brokeback Mountain -- Jake Gyllenhaal has finally shown his ass in public.Wearing a caveman beard and some kind of taped-on merkin over his wang, Jake stripped down to the nude while filming a camping scene for his new movie "Everest" in Rome Sunday ... complete with a pan and a tent.It's one of the rarest asses in Hollywood so ... this is a pretty big deal.We'll never watch Bubble Boy the same way again.