People say you can melt a heart of gold,
for you were teaching heartbreak, and I humbly enrolled.
They call you royal, a queen,
but that’s just hysteria.
I know the truth,
you’re poison like aqua regia.

aq·ua re·gi·a
/ˌäkwə ˈrēj(ē)ə,ˌakwə ˈrēj(ē)ə/
nounCHEMISTRY
a mixture of concentrated nitric and hydrochloric acids. It is a highly corrosive liquid that will dissolve gold and other resistant substances.