Question: what are the 20 idiomatic expressions?
Answer: Straight from the horse's mouth. Meaning: getting information directly from the most reliable source. ...  Let the cat out of the bag. Meaning: to mistakenly reveal a secret. ...  Butter someone up. ...  Pulling someone's leg. ...  Wolf in sheep's clothing. ...  Hands down. ...  Riding shotgun. ...  Barking up the wrong tree.