Trombone

The jawbone's connected to the trombone.

Extra Lines

I'm an idiot.

To that, I must confess.

I didn't know I had to write

twenty words or more, but no less.

Thanks to my mistake

I was stopped in my tracks

when I clicked on the Post button.

I was given the ruling facts.

These few extra lines

I have had to scavenge

so I would be able to post

in this wittiest poem challenge.

And now I have learned

what they taught in my schools.

Next time I accept a challenge,

I will have to follow the rules.