get a move on
similar to "put a fire under it," "let's move/get going," or "get the lead out"...meaning to hurry. as mentioned above, it is usually used by parents, dads in particular.
Example:
"stop dawdling or you'll be late for school. now quit lollygagging and let's get a move on!"
"stop dawdling or you'll be late for school. now quit lollygagging and let's get a move on!"