IF YOU DONT BELIVE THIS IS REAL, GO TO THE E3 TRAILER OF HALO3 AND STOP IT AT 1:15! it is there.
I was browsing the bungie.net forums when i saw a strange topic. i checked it out and there it was. LOOK BETWEEN THE LEGS!!
http://i10.tinypic.com/623gheg.jpg
some say its an animation glitch in the armor, while others think its an easter egg. idk. but its funny.
link to e3 trailer if u dont belive. http://www.bungie.net/News/content.aspx?
type=topnews&link=ethreeblowout
heres a pic for those of u that the link wont work.