allright, i always do this in thunder bluff on my 19 twink shaman, not sure if it will work anywhere else.
i /duel someone, then i just lay down totems next to the guards that walk past and 99% of the time if my enemy attacks my totems the guards will own them.
pretty funny when i /duel level 70's and watch them get raped by guards.
heres a few screenies.
http://img88.imageshack.us/my.php?image=guards1fy1.jpg
http://img88.imageshack.us/my.php?image=guards2ed6.jpg
by Emotroll