1. Yeah, right. 2. You're kidding. 3. You're pulling my leg. 4. That's a bit of an exaggeration. 5. He's stretching the truth. 6. He's not telling the whole truth. 7. She's being economical with the truth. (= she's lying or not telling the entire truth) 8. His story is fishy. 9. That's an outright lie. 10. That's a pack of lies.