Ok
Go to a low lvl place like the Orc starting area.
Tame a boar there that is exactly like the others.
Have it walk around just like a Normal Boar would do,
infront of a Lower lvl.
Some Lower lvls are nubs and wont know, they'll
try to hit it.
Once they hit the boar they will be PVP!
And you can then go on and kill them.
Oh and heres a video!
http://www.youtube.com/v/Nitza6Y4HjE&rel=1"
Video made by 000termi000 at Youtube.com
ENJOY! PWN THEM HORDE! And feel Like a jerk.