on second thought in a sentence

Examples

1. On second thought, we'd better be careful about that.
2. On second thought, that would just make them hungrier.
3. On second thought, it all makes good sense, too.
4. On second thought, she probably already has a copy.
5. Which isn't such a bad thing, on second thought.
6. On second thought, five months after groundbreaking, don't.
7. On second thought, support-- if Tony pays up.
8. On second thought, wasn't that show . ..
9. On second thought, all you guardians, never mind.
10. On second thought, Michael J's version sounds better.