A very woolly idea!

"Jamie!" screeched Jamie's mother. "Get your backside down here and mow that lawn."
Jamie pulled his duvet over his head to muffle the sound of her drumbeat voice.
"I can't mum, my legs hurt," he mumbled.
"No excuses, Jamie. When I come back from work today I want that lawn so neat and trim you could use it as a putting green."
The last thing Jamie heard was the front door slam shut.
The race was now on. The only thing was Jamie hated mowing the lawn. Every Spring, Summer and Autumn he had to mow the lawn every fortnight. This year, however, he had a secret weapon.
He leapt out of bed, threw on his clothes and ran into the garden. It took him a good ten minutes to wade through the two foot high grass to get to the back fence, where he put his plan into action. With a set of wire clippers he cut the down the fence and waited for the inevitable woolly stampede.
Sure enough the lure of the lush green, weed-riddled grass was too much for the residents of the field and before Jamie knew it an entire flock of sheep were busily munching on his mother's lawn.
By six in the evening the lawn was as smooth as silk, and riddled with sheep poo.
"That'll do nicely," said Jamie, proudly.