1. My students are acting up in my class again, I'm going crazy.
2. His friends worried that the news might push him over the edge.
3. He lost his job and just went bananas.
4. You'd better sit down, this news will freak you out.
5. He seems to fly off the handle about the slightest thing these days.
6. She'll flip her lid when she finds out.
7. I lost my cool and shouted at them.
8. I'll go nuts if I have to wait much longer.