Swat!

A fly flies in;
You want him out.
That's what a swatter's 
All about.

You hope he lands
Where you can reach.
(Some spots have rules
You should not breach.)

Like on a vase
Or someone's head.
You need a wall
Or door instead.

And then you aim
With what you've got.
If luck is yours,
You've made the shot.

The fly falls down
Upon the floor
And then your swatter
Waits for more.