Starting from the top left and reading left to right the answers are:
1. Gross Injustice
2. Forever and ever
3. Up hill
4. Go on a double date
5. Know it forwards and backwards
6. Broken promise
7. Wait on hand and foot
8. He came out of nowhere
9. Dark circles under the eyes
10. In between jobs
11. Accentuate the positive
12. Reading between the lines
13. The good, the bad, and the ugly
14. Roger over and out
15. I understand
16. Get a foot in the door
I STILL WANT MORE WACKY WORDS!