'As sly as a snake' could be one.
The simile "like snakes under a porch" evokes a sense of hidden danger and unease. It suggests that something unsettling or treacherous is lurking beneath the surface, much like snakes that are often unseen but can strike unexpectedly. This imagery can convey feelings of anxiety or foreboding, emphasizing the unpredictability of what lies beneath a seemingly calm exterior.
A simile.
A metaphor
As quick as a wink is a simile. ----
It is a simile.
Imitating is the present participle of imitate.
simile It is an example of a simile (uses like or as). A simile in itself though is a type of metaphor.
simile
that man
I think he is imitating Robert Stack. Remember the show "Unsolved Mysteries"?
It is a similie as you are comparing (something) to how sly the fox is. A similie uses the words "like or "as".
simile