Definition of add or put in one's twopenn'orth in English:
informal Contribute one’s opinion.
- I know everyone's slagging it off but I'll have to add my twopenn'orth.
- As usual when I start reading a thread like this, I itch to add my twopenn'orth (/ two cents worth), then I read on and find that others have beaten me to it and I'm left with about a hap'orth (/ half a cent's worth).
- My twopenn'orth would be that the ‘problem’ occurs because of a conflating of print and web design criteria.