Confounded by a Commode

I fixed the toilet like a chupp.
To flush it you have to pull up
If you push down like a clown
all you will have is a frown
on your dissapointed face
in this most private place
No change is idiot proof
though this time if you goof
you should be all alone
when you have to groan;
It don't go down everytime
is there no reason or rhyme?