Tupperware

Have you ever thrown out,
An old Tupperware lid,
Only to find later on, on the shelf,
Is where the bottom hid?

But what could you possibly do by then,
But throw the bottom out?
For it was such a unique container,
There was a time it was something you'd tout.

And lo and behold, that lid comes back round,
Maybe you remembered,
The notion of throwing that lid away,
Not that you overturned,

That avenue.
Tupperware's elegant,
You can't interchange any part of it,
Unless you find its exact duplicate.