At Your Service

In the center I stand
Wincing and squinting
as they snort and
spit
"I thank you, ma'am
and I thank you, sir," I'll say
Waiting to see them turn
before I wipe it all away
for they say I must be anything,
anything but rude
We should express our feelings freely
Analyze why we're in whichever mood
This is unless, of course,

You're me

But you need not worry
For I am invaluable
and I will never cease to be