Achilles' heel Brownie points Busy as a bee The chips are down Cut-and-dried Don't look a gift horse in the mouth Dropping like flies Elbow grease A fish out of water Fit as a fiddle A fly on the wall Hook, line, and sinker In your face Lend an ear Loose cannon Mind over matter My hands are tied Nothing to sneeze at Opening a can of worms Over the hill Pecking order Pull some strings Put a sock in it Rain or shine Rub someone the wrong way A stick in the mud Talk turkey Tongue-in-cheek Walking on eggshells The whole kit and caboodle You can't teach an old dog new tricks
