If they want ot attack me, they agree to accept the injuries they will sustain.

How do manage to get them to accept that? Do you force them to sign some sort of waiver or something? "I hereby agree to let you whup my butt and fully accept sole liability for any injuries sustained during said whupping!". What a cool idea... could you send me a copy of the waiver!
Gavin King
Follow me on twitter @taichigav