1) Behind the curve
-People used to joke that Hong Kong was always two years behind the curve in terms of music
-I have been living under a rock and am behind the curve in fashion
-Aaron is always behind the curve in the latest TV trends
Definition: outdated
Etymology: The idea behind the idiom is the bell curve on a graph in which the top of the curve represents what most people do (for instance) and the lower ends represent the ...
2) Breathing down my neck
-Jason had to find a date before Chinese New Year, because his parents where breathing down his neck
-His boss was breathing down his neck to make sure he finished the project
-Grace hated how her parents where breathing down her neck to excel in both after school activities and class.
Definition: to keep close watch on someone; to watch someone's activities intently.
Etymology: (Alludes to someone standing very close behind a person.)
3) Slim pickings
-Gary lamented on the slim pickings of potential dates on the dating website
-Mike has been looking for a job for months, since there were slim pickings in the job market
-There were slim pickings of good land to grow crops
Definitions: few choices, in general. Possibly, no choices at all (understatement). Pickings = the things you have available to pick.
Etymology: Slim = thin