An authentic source; someone who directly experienced or witnessed something.
meal ticket
Someone or something that provides income or livelihood, especially as …
put words in someone's mouth
To say or imply that someone has made a statement or remark which they …
problem child
Someone or something persistently difficult or vexing; a frequent sour …
straight from the horse's mouth
firsthand; direct; from the source.
know inside and out
To know (something or someone) very thoroughly.
paper tiger
Something or someone that appears powerful, strong or threatening but …