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.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.