Unused saws

Can't eat your cake 
that you don't have. 
Can't look your horse 
in its long-gone mouth 
When you gave it away 
by the waterside. Well 
you led the way fine, 
but you lost your ride. 

Now you can't teach 
dirty dogs squeaky-clean 
tricks! When will you
learn 
what not to mix?

All your metaphors laid
like so many bricks slid
into similes 
you can't like as this.
But 
you might as well learn 
from experience.
It sure 
isn't good
for much else, 
you wince.

You can't fly 
a kite from a bike
off a log
 
and expect to forget 
how you did that 
a thing like that  

tends to stick 
- unless you were stoned, 
or ended up with a concussion. Well,

try it again, then, maybe. For 
the memory jog