ADD (OR PUT IN) ONE'S TWOPENN'ORTH
Meaning of ADD (OR PUT IN) ONE'S TWOPENN'ORTH in English
add ( or put in) one's twopenn'orth
informal
contribute one's opinion.
→ twopenn'orth
Concise Oxford English vocab.
Сжатый оксфордский словарь английского языка.
2004