1. merry-go-round
2. the tip of the iceberg
3. right under your nose; don’t overcorrect
4. rub the wrong way
5. Who’s on first?
6. a walk in the park
7. stretching the truth
8. side-splitting laughter
9. looking out for number one
10. the beginning of the end
11. point blank range
12. the fifth wheel; spare tire