| A | B |
| got up on the wrong side of the bed | be in a bad mood |
| has a heart of gold | is kind and caring |
| down in the dumps | feeling sad |
| hitting the books | studying very hard |
| raining cats and dogs | raining very hard |
| bit off more than he can chew | tried to do more than he could |
| couch potato | sits on couch and watch too much TV |
| I'm all ears | paying close attention to what you say |
| blowing his own horn | bragging about himself |
| stay on your toes | pay close attention |
| nuts about you | really likes you |
| catching some Z's | sleeping |
| have a green thumb | good at growing plants and flowers |
| have butterflies in your stomach | feel nervous |
| pulling my leg | teasing, joking, kidding |
| walking on air | very happy |
| on top of the world | very happy |
| sleep on it | think about what you said |
| zip your lip | be quiet, don't talk so much |
| don't throw in the towel | don't give up easily |
| dirt cheap | inexpensive |
| put your foot in your mouth | say something inappropriate |
| head in the clouds | daydreaming not paying attention |