▁involving ▁a ▁fier ce ▁struggle ▁between ▁the ▁two ), ▁they ▁are ▁often ▁said ▁to ▁be ▁imm une ▁to ▁s nake ▁ven om . ▁The ▁go anna ▁does ▁eat ▁ven om ous ▁sn akes , ▁but ▁no ▁evidence ▁found ▁suggests ▁actual ▁poison ▁imm unity . ▁Other ▁stories ▁say ▁the ▁l izard ▁e ats ▁a ▁legend ary ▁plant , ▁or ▁drink s ▁from ▁a ▁he aling ▁spring ▁which ▁neutral ises ▁the ▁poison . ▁This ▁is ▁imm ort al ised ▁in ▁Andrew ▁Bart on ▁" B an jo " ▁Pat erson ' s ▁hum orous ▁poem ▁Johnson ' s ▁Ant id ote ▁ ▁Poss ibly ▁related ▁to ▁the ▁above ▁poison ▁imm unity , ▁go anna ▁fat ▁or ▁oil ▁has ▁been ▁an ec dot ally ▁im bu ed ▁with ▁myst ical ▁he aling ▁properties . ▁Bund jal ung ▁Nation ▁Ab orig ines ▁tradition ally ▁used ▁go anna ▁oil ▁as ▁an ▁important ▁bush ▁medicine , ▁and ▁it ▁also ▁became ▁a ▁common ▁medicine ▁among ▁Europe ans ▁in ▁Australia ' s ▁early ▁days . ▁Sa id ▁to ▁be ▁a ▁c ure - all ▁for ▁all ▁sorts ▁of ▁a il ments , ▁and ▁possess ing ▁amaz ing ▁powers ▁of ▁pen etr ation ▁( pass ing ▁through ▁metal ▁as ▁if ▁it ▁were ▁not ▁there ), ▁it ▁was ▁sold ▁amongst ▁early ▁sett lers ▁like ▁s nake ▁oil ▁( a ▁traditional ▁Chinese ▁medicine ▁used ▁to ▁treat ▁joint ▁pain . ▁However , ▁the ▁most ▁common ▁usage ▁of ▁the ▁phrase ▁is ▁as ▁a ▁der og atory ▁term ▁for ▁comp ounds ▁offered ▁as ▁medic ines ▁which ▁implies