Because Ranma is apparently a lot tougher than mere solid rock.  I mean, 
look at all the times Ranma gets slammed against rock.  Which usually 
gives, the rock or Ranma?

Take my word for it, no matter what, solid granite is stronger than a
person.  Always.

Hunter Kid
http://www.serve.com/guilds/ranma/
guilds@mail.serve.com

open hk.sig

    "'We'?"  Ranma asked, confused.
    "Oh," Tarou said, pulling up a gasping human Ryoga from under the
water, who sucked in air gratefully and wrung the water out of his bandanna
in irritation.  "It's just Ranma, Ryoga.  Nothing to worry about."
    Ryoga punched him.  "You could have told me sooner, you idiot!  I had
to hold my breath that whole time!"
					 	-from Mirror Images, chapter 1
[hk.sig; errors-0; file terminating]