Colloquial English Idioms

ring a bell
If something rings a bell, it sounds familiar, but you don't remember the exact details. John Bentley? The name rings a bell but I don't remember him.
chime in		If you chime in, you interrupt or join a conversation, especially to repeat or agree with something. While I was explaining to the bus driver what had happened, the other passengers chimed in and gave their version.
drum (smth) into someone's head		If you teach something to someone through constant repetition, you drum it into their head. When we were kids at school, multiplication tables were drummed into our heads.
as fit as a fiddle		A person who is as fit as a fiddle is in an excellent state of health or physical condition. My grandfather is nearly ninety but he's as fit as a fiddle.
Play second  fiddle		If you play second fiddle to someone, you accept to be second in importance to that person, or have a lower position. When Charles became chairman of the family business, his brother declared that he would rather leave than play second fiddle to him.