I think the line "but if I pierce your heart it is bound to sting"
echoes Alice in Wonderland lines:
"a red-hot poker will burn you if you hold it too long; and that if you cut your finger very deeply with a knife, it usually bleeds; and she had never forgotten that, if you drink much from a bottle marked `poison,' it is almost certain to disagree with you, sooner or later"
A typical British understatement joke...
I think the line "but if I pierce your heart it is bound to sting" echoes Alice in Wonderland lines: "a red-hot poker will burn you if you hold it too long; and that if you cut your finger very deeply with a knife, it usually bleeds; and she had never forgotten that, if you drink much from a bottle marked `poison,' it is almost certain to disagree with you, sooner or later" A typical British understatement joke...