What is Tuppeny Ha'porth?
1.
derived from two pence
indicates what something is (or isn't) worth, it refers to the pre decimalisation British currency £SD (pounds shillings pence)
used to be 2d (pennies).
similar in usage to the US 2 cents
I don't give a tuppeny ha'porth about your opinion
or if you comment on something and don't expect it to be taken to seriously you might sign off as.."just my tuppeny ha'porth"
See