Tell the, they needs to STFU, take thier lumps, and walk away from it with no claims.
Sorry, but if I stick your gun in my mouth and pull the trigger, I have no right to sue you because I hurt myself.
Likewise, if I go off-roading and
refuse to wear a seatbelt, I expect to bump my head on something!
Just like if I move into the forest, I expect the wild animal to eat my cattle.