|   | 
		
		 | 
		
			BitchieKittie, I think that, perhaps, to stay within the boundaries of your metaphor, you should describe your ass as cometic.  A comet would leave a crater, yes?  And it seems to have other parallels as well. 
 
From Webster's Online: 
 quote:comĀ·etic 
of or relating to a celestial body that consists of a fuzzy head usually surrounding a bright nucleus, that has a usually highly eccentric orbit, and that often when in the part of its orbit near the sun develops a long tail which points away from the sun 
 
I especially like the part about the fuzzy head.  And the highly eccentric orbit.			 |   
		 | 
				
				
 |