We filter our coffee each time that we brew it;
In autos, we filter the oil (but you knew it).
We filter the furnace, to guard against dust
And likewise the dryer (for sure, it’s a must).
We filter our email for spam, then we toss it;
And some even filter the flow from the faucet.
If only we’d filter (from north to the south)
Such horrible words that will blurt from our mouth!
Don Munday, email@example.com