run across someone or something
AND
come across someone or something
To meet someone accidentally.
To disclose something by chance.
Dick: Tom, it is a very good book. Where did you run across this book?
Tom: I’m not so lucky to be able to run. I’ve met with an accident and injured my leg. By the by, I found this book while surfing the Internet.
1. move your body into horizontal position.
Ex: Lie in bed.
Lie in the garden.
2. Say something that is not true.
Professor: No one should lie in the university.
Tom: If someone lies…
Professor: You can do whatever you want.
Tom: I will just hug…
Professor: Ooh! Is it another peace movement? I’d appreciate it. Go ahead.
Tom: Can I go and hug that lying person?
Professor: Who is lying?
Tom: Your daughter…
Professor: I can’t believe it.
Tom: See yourself. She’s lying in the garden.
To tell someone to go away rudely.
Boss: Tom, I’m fed up with you. Get lost!
Tom: I can’t, Sir.
Boss: How dare you talk to me like that?
Tom: I’m sorry to say I’m helpless in this matter, Sir.
Boss: Tom, don’t test my patience. Get lost!
Tom: I tried several times whenever you said ‘Get lost!’ but couldn’t succeed.
Boss: What?
Tom: Several times I got lost myself in dreams, busy streets, crowded trains but all in vain. I found myself every time I lost myself.