There's no flies on

no flies on (one)

One is very active or works at a fast pace. Alludes to the idea that flies do not or cannot settle on fast-moving animals. There are certainly no flies on Judy. She works so fast that the rest of her team can't keep up with her.
See also: flies, no, on
Farlex Dictionary of Idioms.

There's no flies on someone

. Rur. Someone is full of energy and drive. There's no flies on Jane. She's up at five every morning, training for the big race.
See also: flies, no, on
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • no flies on
  • no flies on (one)
  • no flies on one
  • no flies on somebody
  • there are no flies on
  • there are no flies on someone
  • whip by
  • fast and furious
  • run at a fast clip
  • ride hell (bent) for leather, to