Here's how it breaks down:
* Lay a line on: This is a common phrase meaning to try to charm or persuade someone, often with flattering words or promises.
* Big: This emphasizes the extent or intensity of the deception.
* Could: This implies the person has the ability to do this, but it doesn't mean they necessarily will.
Example:
"That salesman could lay a big line on anyone. He's got that silver tongue."
Other ways to say it:
* Talk someone into something
* Sweet-talk
* Con
* Charm
* Manipulate
It's important to note that the phrase "lay a big line on" carries a negative connotation. It implies that the person using this tactic is not being honest or genuine.