David Joy's definitions

all over it like a donkey on a waffle

To make an act one's top priority, much like scarfing free breakfast would be for a donkey, were it confronted by an unattended waffle. Usage of the phrase implies some amount of immediacy or urgency to the performance of the act.

Boss: Can you get that done by noon?
You: I'm all over it like a donkey on a waffle.
Boss: Hell yeah.

by David Joy June 1, 2007